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SECTION - LONG ESSAYS (2 x 10 = 20 Marks)

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Q1. Mention the causes of road traffic accidents. Write a note on educational content to address school children to avoid road traffic accidents.

Introduction

Causes / Risk Factors of Road Traffic Accidents

A. Human Factors (responsible for up to 90% of accidents)

1. Speed - An increase in average speed directly relates to likelihood of crash and severity. Pedestrians have <50% chance of survival at impact speed >45 km/h.
2. Alcohol and drugs - Alcohol is the direct cause of 30-50% of severe road accidents. Barbiturates, amphetamines, cannabis also impair driving ability.
3. Distracted driving - Use of mobile phones while driving is a growing risk factor.
4. Driver fatigue - Long hours of driving without rest.
5. Low driving standards - Lack of formal training, poor awareness of traffic rules.
6. Widespread disregard of traffic rules - Jumping signals, lane violations, overloading.
7. Vulnerable road users - Nearly 48% of those dying on roads are pedestrians, cyclists and motorcyclists.
8. Age and sex - Males under 25 years are almost 3 times more likely to be killed than young females.

B. Environmental / Road Factors

1. Defective roads, poor street lighting, poor layout of crossroads and speed breakers.
2. Large numbers of pedestrians and animals sharing the roadway with fast-moving vehicles.
3. Large numbers of old, poorly maintained vehicles.
4. Large numbers of motorcycles, scooters and mopeds.
5. Overloaded buses.
6. Unusual behaviour of men and animals on roads.

C. Vehicle Factors

• Defective brakes, tyres, lighting
• Poor vehicle design
• No seat belts / helmets

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Educational Content to Address School Children to Avoid Road Traffic Accidents

• Always walk on the footpath / left side of the road
• Cross the road only at zebra crossings or pedestrian signals
• Obey traffic lights - red means stop, green means go
• Never run onto the road without looking both ways

• Do not play on the road or near traffic
• Always wear a helmet when riding a bicycle or two-wheeler
• Wear seat belts when in a car
• Children under 12-15 years must sit in the rear seat of cars only
• Do not hang out of buses or vehicles

• Educate older children that alcohol impairs driving ability and should never be combined with driving

• Never use a mobile phone while cycling, riding or crossing roads

• 30 km/h zones near schools reduce crash risk significantly
• Pedestrians have a 90% chance of surviving a car crash at 30 km/h or below

• Young people should be trained in basic first aid so they can help road accident victims
• Know emergency numbers (112 / 108 ambulance)

• There is a widespread belief that accidents are inevitable - this fatalistic attitude must be curbed
• Road accidents are preventable and are not "just fate"

• Seat belt use reduces fatalities by ~50%
• Safety helmets reduce head injury risk by 30% and fatalities by 40%

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Q2. Mention the causes of Infant Mortality. Write preventive and social measures for reducing Infant Mortality Rate in India.

Definition

Causes of Infant Mortality

A. Medical Causes

B. Biological Factors

1. Birth weight - Low birth weight (<2.5 kg) is the most important determinant
2. Sex - In India, post-neonatal female deaths are higher due to social discrimination
3. Birth order - Highest mortality in first-born; escalates after 3rd birth
4. Birth spacing - IMR highest in births <1 year apart
5. Multiple births - Greater frequency of LBW
6. Family size - Infant mortality increases with family size
7. High fertility

C. Social and Environmental Factors

1. Mother's education - Illiteracy is a major determinant
2. Mother's age - Mortality highest for teen mothers and mothers >35 years
3. Poverty and socioeconomic status
4. Quality of health care - Only 47% deliveries attended by trained birth attendants in India
5. Broken families - Single parent or separated households
6. Brutal customs - Depriving baby of colostrum, application of cowdung to cord, early weaning
7. Untrained indigenous dai - Major cause in rural India
8. Bad environmental sanitation - Contaminated water, poor housing, overcrowding

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Preventive and Social Measures to Reduce IMR

• Supplement maternal diet with extra calories and protein
• Food supplementation programmes (ICDS) during pregnancy
• Adequate iron and folate supplementation to prevent LBW

• Universal Immunization Programme (UIP) - protects against 9 vaccine-preventable diseases
• Neonatal tetanus prevention through TT vaccination of pregnant mothers
• Promotion of oral rehydration therapy (ORT) for diarrhoea

• Most effective measure for lowering infant mortality
• Safeguard against gastrointestinal and respiratory infections and PEM (protein-energy malnutrition)
• Exclusive breastfeeding for 6 months

• Weigh infants at least once a month
• Use growth charts (Road-to-Health chart) to identify at-risk children early

• Limit family size; space births at least 2 years apart
• Smaller sibship and longer birth spacing improve infant and child survival

• Safe water supply
• Improved housing and drainage
• Reduction of overcrowding and insect breeding

• Improve antenatal care; detect high-risk mothers
• Hospitalize high-risk pregnancies
• Provide "special care baby units" for babies <2000 g
• Proper referral services

• Female literacy is the single most powerful determinant of IMR reduction
• Educate mothers about proper feeding, hygiene and danger signs

• Elimination of poverty and improvement of living standards
• Gender equality and elimination of preference for male child
• Discouragement of early marriage

• ICDS (Integrated Child Development Services)
• Janani Suraksha Yojana (JSY) - for institutional deliveries
• PMSMA (Pradhan Mantri Suraksha Matritva Abhiyan)
• Poshan Abhiyaan / National Nutrition Mission

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SECTION - SHORT ESSAYS (6 x 5 = 30 Marks)

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Q3. Describe the Planning Cycle

• Collection, assessment and interpretation of data
• Population structure, morbidity/mortality statistics, epidemiology of diseases, health facilities, manpower, training facilities, attitudes of population

• Short-term and long-term objectives set at all levels
• Objectives are a yardstick to measure work
• Tools: cost-benefit analysis, input-output study

• Manpower, money, materials, skills and knowledge
• Balance struck between requirement and availability

• Based on mortality/morbidity data, diseases preventable at low cost, financial constraints, political interests
• Alternate plans formulated and the most effective selected

• Detailed plan prepared for each health programme
• Resources (inputs) related to results (outputs)
• Each stage costed and time specified
• Built-in evaluation system included

• Effective organizational structure needed
• Defined roles, delegation of authority, selection and training of manpower

• Day-to-day follow-up during implementation
• Continuous process of observing, recording, reporting

• Assessing whether objectives were achieved
• Leads back to re-analysis - hence it is a CYCLE

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Q4. Types of Cancer Registries

Types:

• Records all new cancer cases occurring in a defined geographic population
• Provides incidence rates
• Example: Bangalore, Mumbai, Chennai registries under ICMR's NCRP (National Cancer Registry Programme)
• Used for epidemiological research and health planning

• Records all cancer cases seen in a specific hospital
• Provides data on treatment, recurrence, survival
• Does not give incidence rates for the general population
• Useful for clinical audit and resource planning
• Example: Tata Memorial Hospital Registry, Mumbai

• Based on histopathological reports from laboratories
• Provides information on cancer morphology and type

• Records a specific type of cancer (e.g., leukaemia registry)

• Aggregates data from all PBCRs and HBCRs at national level
• Provides national cancer burden data

Importance of Cancer Registries:

• Identify high-risk groups
• Monitor cancer trends over time
• Plan cancer control programmes
• Evaluate impact of screening and treatment
• Support research

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Q5. National Blindness Control Programme (NBCP)

Introduction

Objectives:

1. To reduce the prevalence of blindness from 1.4% (1986) to 0.3% by 2020
2. To develop a comprehensive eye care infrastructure
3. To provide eye care at primary, secondary and tertiary levels

Target:

Major Causes of Blindness in India (in decreasing order):

1. Cataract (62.6%) - most common cause
2. Refractive errors
3. Glaucoma
4. Corneal blindness
5. Diabetic retinopathy
6. Childhood blindness

Key Components / Strategies:

• Free cataract surgery including IOL (Intraocular Lens) implantation
• Camp and fixed facility approach
• Target: 6 million cataract surgeries/year

• Screening for refractive errors and squint
• Provision of free spectacles to school children

• Training of ophthalmic assistants and health workers
• Capacity building at PHC level

• Setting up of District Eye Care Units
• Mobile eye units for underserved areas

• Vitamin A supplementation to children under 5 years

• Antibiotic therapy and surgery (SAFE strategy)

• Now called NPCB&VI (National Programme for Control of Blindness and Visual Impairment)
• Expanded to include all eye diseases

Role of Health Worker:

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Q6. Salient Points to Address School Children on Adverse Effects of Poor Lifestyle on Health

• Excessive screen time (TV, mobile, video games) promotes obesity
• Children should have at least 60 minutes of moderate-to-vigorous physical activity daily
• Encourage sports, outdoor play, cycling, walking

• Consumption of junk food (chips, burgers, aerated drinks) - high in salt, sugar, trans fats
• Leads to obesity, type 2 diabetes, hypertension
• Promote: fruits, vegetables, whole grains, home-cooked meals
• Breakfast is essential for brain development and concentration

• Even passive smoking is harmful
• Peer pressure is the main gateway - resist it firmly
• Tobacco causes cancer, lung disease, heart disease

• Alcohol consumption at early age damages developing brain
• Leads to addiction, liver disease, accidents

• Less than 8-10 hours of sleep per night in children affects immunity, growth, and concentration
• Consistent sleep-wake schedule is important

• Examination stress, social media addiction, cyberbullying are growing concerns
• Yoga, meditation, and talking to a trusted adult help manage stress

• BMI-for-age monitoring is important
• Childhood obesity leads to adult obesity, type 2 DM, hypertension, dyslipidaemia

• Avoid drugs, inhalants, and other substances that are increasingly prevalent in school settings

• Regular handwashing, dental hygiene prevent communicable diseases

• Prolonged device use causes "text neck," myopia, and eye strain

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Q7. Job Responsibilities of ASHA Worker

Key Job Responsibilities:

• Register all pregnancies in her area
• Motivate pregnant women for antenatal checkups, institutional delivery
• Accompany pregnant women to PHC/CHC for delivery under Janani Suraksha Yojana (JSY)
• Assist in weighing newborns, identifying LBW babies
• Promote exclusive breastfeeding for 6 months

• Create awareness about the Universal Immunization Programme
• Ensure complete immunization of all children under 2 years
• Mobilize community for immunization sessions

• Counsel couples on family planning methods
• Distribute condoms and oral contraceptive pills
• Refer for sterilization services

• Identify malnourished children and refer to AWC/ICDS
• Promote balanced diet and exclusive breastfeeding

• Report fever cases for malaria slide collection
• Identify TB suspects and refer for sputum examination
• Ensure TB patients complete DOTS therapy

• Create awareness about sanitation, safe water, hygiene
• Educate community on danger signs in pregnancy
• Promote use of latrines (Swachh Bharat Mission)

• Provide ORS for diarrhoea cases
• Administer chloroquine for suspected malaria
• Provide iron-folic acid tablets to pregnant women

• Maintain village health register
• Maintain family health records

• ASHA is provided a drug kit containing: ORS, iron-folic acid, chloroquine, contraceptives, antiseptics

• Paid performance-based incentives (e.g., for institutional deliveries under JSY)

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Q8. Components of Baby Friendly Hospital Initiative (BFHI)

Introduction

The Ten Steps to Successful Breastfeeding (Components):

1. Written Policy - Have a written breastfeeding policy that is routinely communicated to all health care staff
2. Train all staff - Train all health care staff in skills necessary to implement this policy
3. Inform pregnant women - Inform all pregnant women about the benefits and management of breastfeeding
4. Early initiation - Help mothers initiate breastfeeding within 30 minutes of birth (within 1 hour as per revised guidelines)
5. Teach breastfeeding technique - Show mothers how to breastfeed and how to maintain lactation even if separated from their infant
6. No artificial feeds - Give newborns no food or drink other than breast milk, unless medically indicated
7. Rooming-in - Practice rooming-in (allow mothers and infants to remain together) 24 hours a day
8. Demand feeding - Encourage breastfeeding on demand (feed the baby whenever it is hungry, as often as it wants)
9. No artificial teats/pacifiers - Give no artificial teats or pacifiers to breastfeeding infants
10. Support groups - Foster establishment of breastfeeding support groups and refer mothers to them on discharge from hospital

Benefits of BFHI:

• Reduces neonatal mortality
• Prevents diarrhoea and respiratory infections in infants
• Promotes mother-infant bonding
• Reduces risk of breast and ovarian cancer in mothers

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SECTION - SHORT ANSWERS (10 x 3 = 30 Marks)

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Q9. Cost-Effective Analysis

• Cost-effectiveness analysis (CEA) is a method of economic evaluation used to compare the relative costs and outcomes of two or more courses of action.
• Results are expressed in terms of cost per unit of health gained (e.g., cost per DALY averted, cost per life saved, cost per case detected).
• Unlike cost-benefit analysis, outcomes do NOT need to be expressed in monetary terms.
• It helps policymakers choose interventions that achieve the greatest health gain per unit of money spent.
• Example: Oral Rehydration Therapy (ORT) is highly cost-effective for diarrhoea prevention in children.
• Used extensively in Health Technology Assessment (HTA) for prioritizing health programmes.

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Q10. Zinc Supplementation in Acute Diarrhoea

• WHO and UNICEF recommend 10-20 mg of elemental zinc per day for 10-14 days during acute diarrhoea in children under 5 years.
• Dose: 10 mg/day for infants <6 months; 20 mg/day for children >6 months for 14 days.
• Mechanism: Zinc reduces intestinal permeability, enhances mucosal immunity, promotes enterocyte repair, and reduces stool output.
• Benefits:
  • Reduces duration of diarrhoeal episode by ~25%
  • Reduces severity and stool volume
  • Reduces risk of subsequent diarrhoea episodes for 2-3 months
• Zinc is given along with ORS (Oral Rehydration Salts) - together they form the cornerstone of diarrhoea management.
• Zinc deficiency is highly prevalent in developing countries and is associated with increased susceptibility to infections.

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Q11. PCPNDT Act

• PCPNDT = Pre-Conception and Pre-Natal Diagnostic Techniques Act
• Originally enacted as the PNDT Act in 1994; amended in 2003 to include pre-conception testing
• Objective: To prevent sex-selective abortion and curb the declining child sex ratio in India
• Key Provisions:
  • Prohibition of sex determination of foetus by any technique
  • All ultrasound machines and genetic laboratories must be registered
  • Maintenance of records of all prenatal diagnostic tests
  • The sex of the foetus must NOT be communicated to the mother or any relative
  • Prohibition of advertisement of sex determination services
• Punishments:
  • First offence: Imprisonment up to 3 years + fine up to Rs. 10,000
  • Subsequent offence: Imprisonment up to 5 years + fine up to Rs. 50,000
  • Medical practitioner's name removed from register of Medical Council
• Appropriate Authority (AA) constituted at district, state and central levels to monitor implementation

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Q12. Disaster Mitigation

• Disaster mitigation involves measures designed to prevent hazards from causing emergencies or to lessen their likely effects.
• Mitigation complements disaster preparedness and response activities.
• Measures include:
  • Flood mitigation works (embankments, drainage systems)
  • Appropriate land-use planning (no construction in flood plains)
  • Improved building codes and earthquake-resistant construction
  • Reduction or protection of vulnerable populations and structures
• In the health sector, mitigation focuses on:
  • Ensuring safety of health facilities (hospitals, PHCs)
  • Protecting public health services including water supply and sewerage
  • Medical casualties can be drastically reduced by improving structural quality of houses, schools and public buildings
• When water supplies are contaminated or interrupted, the cost of rehabilitation severely strains the economy.
• Mitigation is a long-term investment that reduces dependence on emergency response.

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Q13. DASH (Dietary Approaches to Stop Hypertension)

• DASH is a dietary pattern specifically designed to prevent and manage hypertension (high blood pressure).
• Originally developed by the US National Heart, Lung, and Blood Institute (NHLBI).
• Key Dietary Features:
  • High in fruits, vegetables, whole grains, low-fat dairy
  • Rich in potassium, calcium, magnesium and fibre
  • Low in saturated fats, total fat and cholesterol
  • Reduced sodium intake (<2300 mg/day; ideal <1500 mg/day)
  • Limits red meat, sweets and sugar-sweetened beverages
• Benefits:
  • Reduces systolic BP by 8-14 mmHg
  • Reduces diastolic BP by 4-8 mmHg
  • Also reduces LDL cholesterol, risk of cardiovascular disease, diabetes and certain cancers
• DASH diet is recommended as a first-line non-pharmacological intervention for hypertension.

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Q14. Indian Red Cross Society (IRCS)

• The Indian Red Cross Society (IRCS) was established by Act of Parliament in 1920.
• It is a voluntary humanitarian organisation and an auxiliary to the government.
• Part of the International Red Cross and Red Crescent Movement.
• Headquarters: New Delhi
• Functions:
  1. Disaster relief - provides food, clothing, shelter during floods, earthquakes, cyclones
  2. Blood banking - runs blood banks and promotes voluntary blood donation
  3. First aid training - trains community members, police and students in first aid
  4. Ambulance services
  5. Health and nursing education - runs nursing schools and ambulance/first aid training
  6. Tracing missing persons during disasters and conflicts
  7. Junior Red Cross activities in schools - promotes health, hygiene and community service among students
  8. Rehabilitation of disabled persons
  9. Mother and Child welfare activities

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Q15. Incineration

• Incineration is the controlled burning of waste at high temperatures (850-1100°C) as a method of waste treatment and disposal.
• It is the most reliable method for the disposal of biomedical/hospital waste.
• Types of incinerators:
  1. Double-chamber (pyrolytic) incinerators - most efficient; primary chamber burns waste, secondary chamber burns gases
  2. Rotary kiln incinerators
  3. Multiple hearth incinerators
• Advantages:
  • Destroys pathogens completely
  • Reduces waste volume by 90-95%
  • Suitable for anatomical waste, cytotoxic waste, sharps
• Disadvantages:
  • Expensive to install and operate
  • Produces dioxins, furans and other toxic emissions if not properly maintained
  • Ash may still contain heavy metals and requires safe disposal
• As per Biomedical Waste Management Rules 2016 (India), colour-coded bins are used and incineration is mandatory for specific categories of waste.

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Q16. Counterfeit Medicines

• Counterfeit medicines (also called spurious drugs) are medicines that are deliberately and fraudulently mislabelled with respect to identity and/or source.
• May contain: no active ingredient, wrong active ingredient, wrong dosage, harmful substances, or poor-quality packaging.
• WHO defines spurious/falsely-labelled/falsified/counterfeit (SFFC) medical products.
• In India, the Drugs and Cosmetics Act 1940 defines and penalises manufacture/sale of spurious drugs.
• Risks:
  • Treatment failure leading to disease progression and death
  • Drug resistance (e.g., antimicrobial resistance from sub-therapeutic doses)
  • Direct toxicity from harmful ingredients
  • Erosion of public trust in healthcare system
• Control measures:
  • Track and trace systems (QR codes, holograms)
  • WHO IMPACT (International Medical Products Anti-Counterfeiting Taskforce)
  • Strengthening regulatory authorities (CDSCO in India)
  • Raising awareness among prescribers, pharmacists and public
  • Strict licensing and post-market surveillance

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Q17. ICTC (Integrated Counselling and Testing Centre)

• ICTC is a facility where a person can voluntarily receive HIV counselling and testing services.
• Established under the National AIDS Control Programme (NACP) by NACO (National AIDS Control Organisation).
• Services provided:
  1. Pre-test counselling - Information about HIV, the test, meaning of results
  2. HIV testing - Rapid tests (ELISA/Western Blot confirmation)
  3. Post-test counselling - Results conveyed confidentially; risk reduction counselling
  4. Referral to ART (Antiretroviral Therapy) centres for positive cases
  5. Referral to PPTCT (Prevention of Parent-to-Child Transmission) for pregnant women
• Types:
  • Standalone ICTC (at PHC, CHC, District Hospitals)
  • Facility-Integrated ICTC (in ANC clinics, TB wards, STI clinics)
  • Mobile ICTC (for hard-to-reach populations)
• Principles: Confidentiality, informed consent, counselling (the 3 Cs)
• Importance: Early detection of HIV enables timely ART initiation, reduces transmission, and prevents mother-to-child transmission.

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Q18. Body Mass Index (BMI)

• BMI is an anthropometric index used to classify underweight, normal weight, overweight and obesity in adults.
• Formula: BMI = Weight (in kg) / Height² (in metres)
• WHO Classification:

• Asian/Indian Cut-offs (modified):
  • Overweight: ≥23 kg/m²
  • Obese: ≥25 kg/m² (since Asians have higher body fat % at lower BMI)
• Uses:
  • Population-level screening for obesity and undernutrition
  • Monitoring nutritional status
  • Predicting risk of chronic diseases (type 2 DM, hypertension, CVD)
• Limitations:
  • Does not distinguish fat from muscle mass
  • Does not reflect fat distribution (central vs peripheral)
  • Not applicable to children (BMI-for-age percentiles used instead)
  • Not applicable during pregnancy
• Ideal BMI for Indians: 18.5 - 22.9 kg/m²

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Reference: Park's Textbook of Preventive and Social Medicine (Park's PSM), 26th Edition by K. Park, Bhanot Publishers, Jabalpur.

Note for exam: Long essay (10 marks) answers should be written in ~2-3 pages with clear headings and subheadings. Short essays (5 marks) need ~1-1.5 pages. Short answers (3 marks) need 8-10 key points. Draw labelled diagrams wherever indicated (e.g., Planning Cycle flowchart, BMI classification table, Causes of infant mortality table). Good luck!

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What's inside the document:

• Q1: Road Traffic Accidents – causes + full school children educational content
• Q2: Infant Mortality – causes table (neonatal vs post-neonatal) + all 10 preventive/social measures

• Q3: Planning Cycle (all 8 steps)
• Q4: Types of Cancer Registries (PBCR, HBCR, Pathology-based, Specialist, National)
• Q5: National Blindness Control Programme
• Q6: Adverse effects of poor lifestyle – school children points
• Q7: Job responsibilities of ASHA worker
• Q8: Baby Friendly Hospital Initiative – all Ten Steps

• Q9–Q18: CEA, Zinc/diarrhoea, PCPNDT, Disaster mitigation, DASH, IRCS, Incineration, Counterfeit medicines, ICTC, BMI

Formatting features:

• Colour-coded headings (blue section headers, green highlight boxes)
• Exam notes in yellow boxes on every question (mark allocation + tips)
• Tables for causes of infant mortality and BMI classification
• Numbered answers for easy counting during exams
• Header + page numbers on every page
• Page breaks between major sections

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SECTION A – LONG ESSAYS (2 × 10 = 20 Marks)

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Q1. Occupational Hazards among Agricultural Workers + Personal Protective Devices (10 Marks)

PART A: Hazards of Agricultural Workers

• Brucellosis, Anthrax, Leptospirosis (paddy field workers - from rodent urine), Tetanus (soil contamination of wounds), Bovine TB, Q fever, Rabies

• Agricultural machinery injuries (tractors, threshers, harvesters)
• Insect bites (bees, wasps) and snake bites - major problem in India
• Injuries from sharp instruments (sickles, ploughs)

• Organophosphate poisoning (most common) - inhibits acetylcholinesterase → SLUDGE syndrome
• Organochlorine (DDT, endosulfan), Carbamates
• Malnutrition and parasitic infestations increase susceptibility to poisoning
• Epidemic dropsy - from argemone oil contamination of mustard oil

• Heat exhaustion and heat stroke from extreme heat/humidity
• Solar radiation - sunburn, skin cancer (long-term UV exposure)
• Noise and vibrations from farm machinery
• Musculoskeletal disorders from awkward postures

• Farmer's Lung - hypersensitivity pneumonitis from mouldy hay (Thermophilic actinomycetes)
• Byssinosis - from cotton dust ("Monday morning tightness")
• Bagassosis - from sugarcane dust; Grain dust occupational asthma

• Skin diseases (contact dermatitis, fungal infections from soil/water)
• Eye problems (pterygium, conjunctivitis)
• Nutritional deficiencies, psychosocial stress

PART B: Personal Protective Equipment (PPE)

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Q2. Cohort Study – Steps + Advantages and Disadvantages (6+2+2)

Steps (6 marks)

1. Selection of cohorts - Exposed cohort (study group) and non-exposed cohort (control group). Both must be disease-free at start, comparable in all variables.
2. Obtaining data on exposure - Interviews, questionnaires, medical records, biological measurements; data on confounders also collected.
3. Follow-up - Both cohorts observed under identical conditions over a defined period (months to decades for chronic diseases). Record outcome events (disease onset, disability, death).
4. Assessment of outcome - Incidence rate calculated in both groups using pre-defined diagnostic criteria.
5. Analysis - Relative Risk - RR = Incidence (exposed) ÷ Incidence (unexposed). If RR>1, exposure associated with increased risk. Attributable Risk also computed.
6. Interpretation - Statistical significance assessed; confounders controlled; conclusions on causation.

Advantages (2 marks)

1. Direct measurement of incidence and relative risk - best study design for causation
2. Exposure determined before disease onset - eliminates recall bias
3. Multiple outcomes can be studied for one exposure
4. Temporal relationship clearly established

Disadvantages (2 marks)

1. Very expensive and time-consuming (especially for diseases with long latency)
2. Not suitable for rare diseases - needs very large cohort
3. Subject to attrition bias - losses to follow-up distort results
4. Exposure status may change during long follow-up

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SECTION B – SHORT ESSAYS (6 × 5 = 30 Marks)

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Q3. Bias in Epidemiological Research

A. Selection Bias

• Berkson's bias (admission rate bias) - hospital patients unrepresentative of general population
• Neyman's bias (prevalence-incidence bias) - only survivors/prevalent cases studied
• Non-respondent bias - non-responders differ from responders
• Healthy Worker Effect - volunteers/employees healthier than general population
• Loss-to-follow-up bias - dropouts differ from completers

B. Information / Measurement Bias

• Recall bias - cases recall past exposures better than controls (worst in case-control studies)
• Interviewer bias - probes cases more thoroughly
• Hawthorne effect - subjects change behaviour when observed
• Diagnostic suspicion bias - exposure knowledge influences disease diagnosis intensity

C. Confounding Bias

• Confounding variable is associated with both exposure and disease
• Example: Smoking confounds alcohol-lung cancer association
• Controlled by: matching, restriction, stratification, multivariate analysis

Control of Bias

• Randomisation (RCTs), Blinding, Matching, Standardised data collection

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Q4. Adulteration of Food

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Q5. Steps in Conducting an Educational Session on Alcohol Use in a Village

Logistics (Pre-Planning)

1. Needs assessment - household surveys; assess extent of alcohol use and its consequences
2. Set objectives - specific, measurable (e.g., "name 3 health effects of alcohol")
3. Target audience - men 18-50 years who are regular consumers + family members; group size 20-30
4. Venue and timing - village panchayat hall; evenings after work hours
5. IEC materials - posters, flipcharts, liver damage models, local-language leaflets; engage ASHA/ANM
6. Coordinate - inform sarpanch, SHGs; organise de-addiction centre referral pathway

Steps of the Educational Session

1. Introduction - welcome, rapport building; short case story about local alcohol-related incident
2. Baseline assessment - open-ended questions: "Why do people drink?" Establish felt-needs
3. Core health education - causes of alcohol dependence; health effects (cirrhosis, carcinoma, neurological damage, fetal alcohol syndrome); social effects (domestic violence, accidents, poverty)
4. Audio-visual aids - posters of liver damage; role play or short film on family consequences
5. Group discussion - local reasons for drinking (stress, peer pressure, festivals); barriers to quitting
6. Motivational counselling - de-addiction services available; coping strategies for stress
7. Evaluation - Q&A to assess understanding; feedback forms; record attendance
8. Follow-up - next session in 4 weeks; ASHA contact for ongoing support; refer cases to de-addiction centre

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Q6. Sickness Absenteeism

• Frequency Rate = (Spells of absence ÷ Workers at risk) × 100
• Duration Rate = (Days lost ÷ Workers at risk) × 100

1. Economic - Sick leave with pay incentivises sick-reporting; workers declare themselves fit or unfit at choice
2. Social - Weddings, festivals, harvest seasons; workers returning to villages
3. Medical - 10% due to occupational accidents; respiratory and alimentary illnesses
4. Non-occupational - Nutritional disorders, alcoholism, drug addiction

1. Good factory management and safe working conditions
2. Adequate pre-placement examination
3. Good human relations between management and workers
4. Application of ergonomics - adapting job to worker
5. Employee assistance programmes for alcohol/mental health
6. Periodic medical surveillance

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Q7. Principles of Health Education

1. Credibility - Message must be trusted. Based on scientific facts + compatible with local culture
2. Interest - Must relate to felt-needs of people. People don't listen to what doesn't concern them
3. Participation - Active learning principle. Community involved in identifying problems and solutions (Alma-Ata Declaration: "people have a right and duty to participate")
4. Motivation - Awakening desire to learn. Primary motives (survival, hunger) and secondary motives (praise, rewards). Positive incentives more effective than negative
5. Comprehension - Simple, familiar language; avoid jargon; demonstrate
6. Reinforcement - Repetition establishes new behaviour. Single contact rarely sufficient
7. Learning by Doing - Practical demonstrations, skill training enhance learning
8. Known to Unknown - Build new knowledge on existing knowledge base
9. Setting an Example - Health workers must practise what they preach
10. Multiple Channels - Combine individual, group and mass media approaches

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Q8. Newborn Screening Tests at Community Health Centre

A. Clinical Screening

• Apgar score at 1 and 5 minutes; Birth weight, head circumference; Physical examination for anomalies

B. Metabolic Screening (Heel-prick blood spot)

1. Congenital Hypothyroidism (CH) - TSH on Day 3-5; TSH >40 mIU/L confirms; treated with thyroxine; prevents cretinism - Most important test
2. Phenylketonuria (PKU) - Guthrie test / fluorometric assay; elevated phenylalanine → intellectual disability
3. G6PD Deficiency - Beutler fluorescent spot test; common in India; causes neonatal jaundice
4. Congenital Adrenal Hyperplasia (CAH) - 17-hydroxyprogesterone; salt-wasting crisis if missed
5. Galactosaemia - Galactose-1-phosphate uridyl transferase assay

C. Haematological

• Serum bilirubin (neonatal jaundice)
• Sickle cell disease / Haemoglobinopathies - HPLC (important in tribal areas of India)

D. Sensory Screening

• Newborn Hearing Screening - OAE (Otoacoustic Emissions) or AABR - mandatory before discharge
• Red reflex test (Brückner test) - detect congenital cataract, retinoblastoma

E. Congenital Heart Disease

• Pulse oximetry screening - SpO2 <95% in pre- and post-ductal = abnormal

F. Other

• Blood glucose (hypoglycaemia in LBW/IDM)
• BCG + Hepatitis B vaccination at birth
• Vitamin K 1 mg IM (haemorrhagic disease of newborn)

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SECTION C – SHORT ANSWERS (10 × 3 = 30 Marks)

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Q9. Measures of Dispersion

1. Range - Difference between highest and lowest value. Simple but reflects only extreme values. Example: BP 71-95 mmHg → Range = 24 mmHg
2. Mean Deviation - MD = Σ|x - x̄| / n. Average of absolute deviations from mean. More informative than range; rarely used in practice
3. Standard Deviation (SD) - Most important. SD = √[Σ(x-x̄)²/(n-1)]. In a normal distribution: Mean ±1 SD = 68.3%; ±2 SD = 95.5%; ±3 SD = 99.7% of all values

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Q10. Sources of Health Information

1. Census - every 10 years; demographic data; denominator for rates; Last in 2011
2. Registration of Vital Events - births, deaths, marriages under RBD Act 1969
3. Sample Registration System (SRS) - since mid-1960s; dual-record system; reliable national/state birth and death rates
4. Notification of diseases - compulsory notification of infectious diseases; morbidity data
5. Hospital Records - OPD/IPD registers; morbidity and treatment data
6. IDSP - Integrated Disease Surveillance Programme; monitors communicable disease trends
7. National Health Surveys - NFHS, DLHS - health indicators, fertility, nutrition
8. Research studies - community surveys, cohort studies, case-control studies

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Q11. Health Effects of Tobacco Use

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Q12. Health Team Concept

• Produces right "mix" of health personnel for full health coverage
• Reduces physician overload through task-sharing
• Ensures holistic (curative + preventive + promotive) care
• Essential for Primary Health Care and Health for All strategy

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Q13. Problem Family

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Q14. Types of Screening

1. Mass Screening - entire population regardless of risk (e.g., universal newborn screening)
2. Selective / High-Risk Screening - only high-risk groups (e.g., mammography for women >40 with family history)
3. Multiple / Multiphasic Screening - several tests simultaneously (e.g., cancer detection camp - breast + cervical + oral)
4. Case-finding (Opportunistic) - done when patient presents for other reasons (e.g., BP check at any visit)
5. Periodic Health Examination - comprehensive check-up at regular intervals
6. Prescriptive Screening - for conditions with effective treatment available

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Q15. Health Effects of Noise Pollution

• Noise-Induced Hearing Loss (NIHL) - irreversible at >90 dB sustained
• Acoustic trauma (sudden explosion), Tinnitus, Accelerated presbyacusis

• Cardiovascular: Hypertension, tachycardia, vasoconstriction, increased CHD risk
• Psychological: Annoyance, irritability, stress, anxiety, sleep disturbance, depression
• Neurological: Headache, fatigue, reduced concentration
• Endocrine: Increased cortisol and adrenaline
• Reproductive: Preterm birth, LBW in highly exposed pregnant women

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Q16. PQLI (Physical Quality of Life Index)

1. Infant Mortality Rate (IMR) - Best = 7 → 100; Worst = 229 → 1
2. Life Expectancy at Age One (LE1) - Best = 77 years → 100; Worst = 38 years → 1
3. Basic Literacy Rate - % population ≥15 years who can read and write

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Q17. Uses of Growth Charts

1. Monitor growth - assess whether child is growing normally
2. Early detection of malnutrition - children below 3rd percentile / z-score ≤-2 SD identified early
3. Identify at-risk children - flattening/dipping weight curve → nutritional supplementation before severe malnutrition
4. Immunization reminder - Road-to-Health card incorporates vaccination schedule
5. Health education tool - explain importance of feeding practices to mothers
6. Epidemiological tool - community-level data identifies high-malnutrition areas for ICDS targeting
7. Evaluation of programmes - before-after comparison evaluates nutritional interventions

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Q18. Types of Genetic Counselling

1. Prospective Genetic Counselling - BEFORE pregnancy; couples at risk (consanguineous marriage, family history); carrier testing for AR disorders (sickle cell, thalassaemia, PKU); prevents birth of affected children
2. Retrospective Genetic Counselling - AFTER birth of affected child; risk of recurrence in future pregnancies; helps parents understand diagnosis and prognosis
3. Prenatal Genetic Counselling - DURING pregnancy; offered for advanced maternal age (>35), previous Down syndrome child; investigations: amniocentesis (15-18 weeks), CVS (10-12 weeks), fetal blood sampling
4. Neonatal Genetic Counselling - When newborn identified with genetic disorder; guides parents on treatment and long-term implications

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Reference: Park's Textbook of Preventive and Social Medicine, 26th Edition - K. Park, Bhanot Publishers

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Components of the Reproductive and Child Health (RCH) Programme

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Definition / Concept

"People have the ability to reproduce and regulate their fertility; women are able to go through pregnancy and childbirth safely; the outcome of pregnancies is successful in terms of maternal and infant survival and well-being; and couples are able to have sexual relations free of fear of pregnancy and of contracting disease."

• Family Welfare Programme
• Universal Immunization Programme (UIP)
• Oral Rehydration Therapy (ORT)
• Child Survival and Safe Motherhood (CSSM) Programme
• Acute Respiratory Infection (ARI) Control

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Components of the RCH Programme

1. Essential Obstetric Care (Safe Motherhood)

• Early registration of pregnancy within 12–16 weeks
• Minimum 3 antenatal checkups by ANM or Medical Officer – to monitor progress, detect risk/complications, and ensure timely referral
• Safe delivery at home or in an institution
• 3 postnatal checkups to monitor recovery and detect complications
• Provision of 24-hour delivery services at PHCs and CHCs (additional honorarium to staff)
• Training of Dais – at least one trained dai per village; implemented in districts with safe delivery rate <30%

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2. Emergency Obstetric Care (EmOC)

• Complications in pregnancy are not always predictable
• First Referral Units (FRUs) strengthened with emergency obstetric kits and skilled manpower
• Referral transport for pregnant women in emergencies (via Panchayat in weak districts)
• Equipment kits (Kit E to Kit P) supplied at identified referral units

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3. Medical Termination of Pregnancy (MTP)

• Reproductive health measure enabling a woman to opt out of unwanted pregnancy under the MTP Act 1971
• Aim: reduce maternal morbidity and mortality from unsafe abortions
• Central Government provides: training of manpower, MTP equipment, contractual MTP-trained doctors at PHCs

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4. Control of Reproductive Tract Infections (RTI) and Sexually Transmitted Diseases (STD)

• Linked to HIV/AIDS control in collaboration with NACO
• RTI/STD clinics set up up to district level
• Assistance: drug kits, disposable equipment, two laboratory technicians per district (on contract) for blood, urine and RTI/STD testing

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5. Immunization (Universal Immunization Programme – UIP)

• UIP became part of CSSM (1992), then RCH (1997), and now part of National Health Mission (NHM)
• Protection against vaccine-preventable diseases in children and pregnant women
• Cold chain maintenance; session-based immunization

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6. Diarrhoeal Disease Control

• India was the first country to introduce low osmolarity Oral Rehydration Solution
• Zinc used as adjunct to ORS – reduces number, severity and duration of episodes
• De-worming guidelines formulated
• Safe drinking water provision

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7. Acute Respiratory Infection (ARI) Control

• Standard case management of ARI, especially prevention of deaths due to pneumonia
• Peripheral health workers trained to recognise and treat pneumonia
• Cotrimoxazole supplied through health worker drug kits

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8. Prevention and Control of Vitamin A Deficiency

• Large doses of Vitamin A given to all children under 5 years:
  • 1st dose (1 lakh units) at 9 months with measles vaccination
  • 2nd dose (2 lakh units) after 9 months
  • Subsequent doses (2 lakh units) at 6-month intervals up to 5 years
  • Additional dose for cases of severe malnutrition

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9. Prevention and Control of Anaemia

• Iron deficiency anaemia widely prevalent in children
• Infants 6 months – 5 years: 20 mg elemental iron + 100 mcg folic acid/day for 100 days/year (liquid formulation)
• Children 6–10 years: 30 mg elemental iron + 250 mcg folic acid for 100 days/year
• Children >10 years: adult dose of iron supplementation

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10. Adolescent Health and Reproductive Hygiene

• Adolescent reproductive health services included
• Education on reproductive hygiene
• Adolescent-friendly health services

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11. Family Planning

• Target Free Approach (TFA) – replaced rigid method-specific targets
• Distribution of contraceptives by health workers
• IUD insertion at sub-centres
• Promotion of spacing methods and terminal methods
• Community education on family planning

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12. Child Survival Interventions

• Integrated with safe motherhood
• IMNCI (Integrated Management of Neonatal and Childhood Illness) in selected districts
• Vitamin A, ORS, immunization, ARI control

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13. Information, Education and Communication (IEC)

• IEC activities to promote demand for services
• Community participation through Panchayats, Women's Groups and NGOs
• Specially designed RCH packages for urban slums and tribal areas

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14. District Surveys (Monitoring and Evaluation)

• RCH district-based rapid household surveys to assess reproductive health status
• Key indicators tracked: ANC coverage, institutional delivery rate, immunization coverage, contraceptive prevalence rate, IMR, MMR

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15. Empowered Action Group (EAG)

• Constituted on 20th March 2001
• Focused attention for 8 high-burden states: UP, Bihar, MP, Rajasthan, Odisha, Chhattisgarh, Jharkhand and Uttarakhand (which contribute 55% of India's population growth)

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Summary Table

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Reference: Park's Textbook of Preventive and Social Medicine, 26th Edition — K. Park, Bhanot Publishers, p. 512 onwards (Chapter on Family Welfare Programme)

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Phases of the RCH (Reproductive and Child Health) Programme

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Background / Evolution

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PHASE I (RCH-I): 1997–2004

Approach

• Differential approach – districts were not given uniform inputs; weaker districts got more support
• Districts classified into 3 categories based on Crude Birth Rate (CBR) and female literacy:
  • Category A – 58 districts (most advanced)
  • Category B – 184 districts
  • Category C – 265 districts (weakest; highest priority)
• Covered in a phased manner over 3 years

Key Components of RCH Phase I

1. Child Survival interventions – immunization, Vitamin A, ORS, ARI prevention
2. Safe Motherhood interventions – ANC, TT immunization, safe delivery, anaemia control
3. Target Free Approach (TFA) – replaced rigid contraceptive targets; community needs-based planning
4. High quality training at all levels
5. IEC (Information, Education and Communication) activities
6. Specially designed RCH package for urban slums and tribal areas
7. District sub-projects under Local Capacity Enhancement
8. RTI/STD Clinics at District Hospitals
9. Facility for safe abortions at PHCs
10. Enhanced community participation through Panchayats, Women's Groups and NGOs
11. Adolescent health and reproductive hygiene

• Screening and treatment of RTI/STD at sub-divisional level
• Additional ANM at sub-centres in weak districts for MCH care
• Improved delivery services – equipment kits, IUD insertion, ANM kits at sub-centres
• Referral transport for pregnant women during emergencies via Panchayat

District Surveys under RCH-I

• % mothers receiving ≥3 ANC
• % institutional deliveries
• % deliveries with skilled birth attendant
• Contraceptive prevalence rate
• % children fully immunized
• Unmet need for family planning
• % households visited by health worker in past 3 months

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PHASE II (RCH-II): 2005 onwards

Major Strategies under RCH Phase II

A. Essential Obstetric Care

• 50% of PHCs and all CHCs to be made operational as 24-hour delivery centres by 2010
• Responsible for: basic emergency obstetric care + essential newborn care + basic newborn resuscitation

• WHO emphasis: skilled attendance at every birth essential to reduce MMR
• Guidelines for normal delivery and obstetric complication management formulated for MOs and ANM/LHVs

• ANMs, LHVs and Staff Nurses now permitted to use drugs in specific emergency situations to reduce maternal mortality
• Permitted to carry out emergency interventions when the life of the mother is at stake

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B. Emergency Obstetric Care (EmOC) – Operationalisation of FRUs

1. 24-hour delivery services (normal and assisted)
2. Emergency obstetric care including surgical interventions (caesarean sections)
3. Newborn care
4. Emergency care of sick children
5. Full range of family planning services (including laparoscopic)
6. Safe abortion services
7. Treatment of STI/RTI
8. Blood storage facility
9. Essential laboratory services
10. Referral transport services

1. Surgical interventions (caesarean section) – 24 hours
2. Newborn care – 24 hours
3. Blood storage facility – 24 hours

• Minimum 20–30 beds (10–12 in NE states and EAG underserved areas)
• Functional OT, labour room, newborn care area
• Functional laboratory, blood storage
• 24-hour water and electricity supply
• Waste disposal and ambulance facility

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C. Strengthening the Referral System

• RCH Phase I: Panchayats given funds for referral transport – limited success
• RCH Phase II: Different states propose different models – Self Help Groups (SHGs), NGOs, women's groups, outsourcing

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D. New Initiatives under RCH Phase II

1. Training of MBBS doctors in life-saving anaesthetic skills – EmOC provision at CHC/FRU level
2. Skilled Birth Attendant (SBA) training for ANMs and LHVs
3. Janani Suraksha Yojana (JSY) – cash incentive to promote institutional deliveries (launched 2005 under NRHM-RCH)
4. Navjaat Shishu Suraksha Karyakram (NSSK) – training for newborn resuscitation
5. Integrated Management of Neonatal and Childhood Illness (IMNCI) – expanded
6. Strengthening FRUs and PHCs/CHCs
7. Accredited Social Health Activist (ASHA) – community-level link worker introduced under NRHM

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Summary Comparison: RCH Phase I vs Phase II

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Reference: Park's Textbook of Preventive and Social Medicine, 26th Edition — K. Park, Bhanot Publishers, pp. 511–515 (Chapter: Family Welfare Programme)

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SECTION A – LONG ESSAYS (2 × 10 = 20 Marks)

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Q1. Dengue Hemorrhagic Fever – Clinical Manifestations + Complications + Management (4+2+4)

Introduction

• Causative agent: Dengue virus (Flavivirus; 4 serotypes – DEN 1, 2, 3, 4)
• Vector: Aedes aegypti (day-biting mosquito)
• Incubation period: 5–8 days
• Dengue Hemorrhagic Fever (DHF) is caused by antibody-mediated immunopathology – occurs mainly in secondary dengue infection with a different serotype

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PART A: Clinical Manifestations (4 marks)

• Grade I: Fever + non-specific constitutional symptoms + positive tourniquet test
• Grade II: Grade I + spontaneous bleeding (skin, gums, GI)
• Grade III: Grade II + circulatory failure (weak pulse, hypotension) – Dengue Shock Syndrome (DSS)
• Grade IV: Profound shock with undetectable BP and pulse

• Sudden onset high fever (39–40°C), often "saddleback" pattern
• Severe headache, retro-orbital pain
• Myalgia, arthralgia ("break-bone fever")
• Flushed face, conjunctival injection
• Anorexia, nausea, vomiting
• Positive tourniquet test (≥10 petechiae per sq cm = positive)
• Rash: maculopapular or macular confluent rash with islands of sparing

• Defervescence (fever subsides) – this is the MOST DANGEROUS period
• Plasma leakage due to increased vascular permeability → pleural effusion, ascites
• Thrombocytopenia (platelets <100,000/mm³)
• Haemoconcentration (Hct rise ≥20%)
• Spontaneous bleeding: petechiae, purpura, epistaxis, gum bleeding, haematemesis, melaena

• Reabsorption of leaked plasma
• Bradycardia, diuresis, improvement in general condition
• Characteristic convalescent rash ("white islands in a sea of red")

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PART B: Complications (2 marks)

1. Dengue Shock Syndrome (DSS) – Grade III/IV; due to massive plasma leakage; most dangerous complication; high mortality if untreated
2. Severe bleeding – GI haemorrhage, haematemesis, melaena; rare but life-threatening
3. Organ impairment – hepatitis (elevated liver enzymes), myocarditis, encephalopathy
4. Fluid overload – from over-aggressive IV fluid therapy; causes pulmonary oedema
5. Secondary bacterial infections

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PART C: Management (4 marks)

• Oral hydration – ORS or fruit juices; 5 glasses/day minimum
• Paracetamol for fever (NOT aspirin or ibuprofen – increase bleeding risk)
• Adequate rest
• Mosquito net/repellent to prevent further transmission
• Daily monitoring: platelet count, haematocrit, signs of plasma leakage

• IV fluid therapy – Ringer's Lactate or NS; start 5–7 mL/kg/hr; adjust by haematocrit
• Monitor urine output (target >0.5 mL/kg/hr)
• Haematocrit monitoring every 4–6 hours
• Platelet transfusion: only if <10,000/mm³ with active bleeding or prophylactically if <20,000/mm³ before procedures

• Rapid fluid resuscitation: 20 mL/kg Ringer's Lactate over 15–30 minutes
• Colloids (dextran, starch) if no improvement after crystalloids
• Oxygen therapy
• Monitor blood pressure, pulse, urine output continuously
• Blood transfusion if evidence of significant haemorrhage

• Vector control: eliminate Aedes breeding sites (stagnant water in coolers, pots, tyres)
• Dengvaxia vaccine – approved in some countries (not universally recommended)
• Personal protection: mosquito repellents, full-sleeve clothing, nets

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Q2. Classification of Contraceptive Methods + Note on Injectable Contraceptives (5+5)

PART A: Classification of Contraceptive Methods (5 marks)

1. Male condom – mechanical barrier; also protects against STIs
2. Female condom
3. Diaphragm + spermicide
4. Cervical cap
5. Spermicides (foam, cream, gel, film)

1. Non-medicated: Lippes Loop (no longer used)
2. Copper-bearing: Cu-T 380A (10 years), Cu-T 200 (3 years), Multiload-Cu 375
3. Hormone-releasing: LNG-IUS (Mirena) – releases levonorgestrel; 5 years

1. Combined oral contraceptive pills (COCPs) – oestrogen + progestogen
2. Progestogen-only pills (POPs/Mini pills)
3. Injectable contraceptives (see Part B)
4. Subdermal implants (Norplant, Implanon/Nexplanon)
5. Emergency contraception – levonorgestrel 1.5 mg within 72 hours

1. Calendar/Rhythm method (Ogino-Knaus method)
2. Basal Body Temperature (BBT) method
3. Cervical mucus method (Billings method)
4. Symptothermal method
5. Lactational Amenorrhoea Method (LAM) – exclusive breastfeeding ≤6 months

1. Tubectomy (female sterilisation) – minilaparotomy, laparoscopic
2. Vasectomy (male sterilisation) – simple, OPD procedure
3. No-scalpel vasectomy (NSV)

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PART B: Injectable Contraceptives (5 marks)

1. DMPA (Depot Medroxyprogesterone Acetate) – Depo-Provera; 150 mg IM every 3 months
2. NET-EN (Norethisterone Enanthate) – 200 mg IM every 2 months
3. Monthly combined injectables – contain oestrogen + progestogen; e.g., Cyclofem

• Primary: Inhibit ovulation (suppress LH surge)
• Secondary: Thickening of cervical mucus (prevents sperm penetration)
• Endometrial atrophy (prevents implantation)
• Impaired tubal motility

• Long-acting, no daily pill burden
• No oestrogen-related side effects (DMPA/NET-EN are progestogen only)
• Can be used by breastfeeding mothers (no effect on milk)
• Reduces dysmenorrhoea, PID risk
• Suitable for women who cannot use oestrogen

• Menstrual disturbances – irregular bleeding, amenorrhoea (most common complaint)
• Delayed return of fertility – 6–18 months after stopping DMPA (major drawback)
• Weight gain
• Reduced bone mineral density with long-term use
• Does NOT protect against STIs
• Requires return visit for each injection (clinic dependency)

• Unexplained vaginal bleeding, suspected pregnancy
• Active liver disease, breast cancer history
• Osteoporosis

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SECTION B – SHORT ESSAYS (6 × 5 = 30 Marks)

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Q3. Components of COTPA 2003

Key Sections / Components:

• No person shall smoke in any public place (offices, restaurants, hotels, airports, hospitals, educational institutions, courts, etc.)
• Designated smoking areas (DSA) may be allowed in hotels, airports, restaurants of specified size
• Penalty: Fine up to Rs. 200

• No advertisement of tobacco products in any form directly or indirectly
• No promotion/sponsorship of sports, cultural or entertainment events by tobacco companies
• Penalty: Imprisonment up to 2 years + fine up to Rs. 1,000 (first offence); up to 5 years (subsequent)

• No tobacco product shall be sold to persons under 18 years of age
• No tobacco products to be sold within 100 metres of any educational institution
• Penalty: Fine up to Rs. 200

• All tobacco product packages must display pictorial health warnings
• Warning must cover 85% of principal display areas (revised rules 2014)
• "Tobacco causes cancer" / "Tobacco kills" – rotating warnings
• Package must display tar and nicotine content

• Manufacturers must display maximum tar and nicotine contents on every package

• Testing labs for tar and nicotine must meet specified qualifications

Additional Provisions:

• Ban on sale of tobacco products in sachets/sticks less than specified quantity (to prevent cheap single-stick sales to youth)
• NTCP (National Tobacco Control Programme) works in tandem with COTPA

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Q4. Health Problems Affecting Tribal Communities

• Malaria – tribal areas account for disproportionately high malaria morbidity/mortality; Plasmodium falciparum predominant; tribal belt (Odisha, Chhattisgarh, Jharkhand, MP) = high transmission zones
• Sickle cell disease – high prevalence in tribal communities; autosomal recessive; causes chronic haemolytic anaemia
• Tuberculosis – high prevalence; late diagnosis due to inaccessibility
• Leprosy – still endemic in some tribal districts
• Kala-azar – in eastern tribal regions
• Filariasis, Japanese encephalitis in specific zones

• High prevalence of protein-energy malnutrition (PEM), stunting, wasting in children
• Anaemia (iron deficiency + sickle cell)
• Vitamin A deficiency → blindness
• Iodine deficiency disorders in hilly tribal areas
• Fluorosis – in some tribal districts with high fluoride in groundwater

• Very high IMR and MMR
• High fertility rate; early marriage; high proportion of home deliveries by untrained dais
• Low immunization coverage
• High maternal anaemia

• High alcohol consumption (country liquor/mahua) → liver disease, accidents, domestic violence
• Tobacco (bidis, smokeless tobacco) – very high prevalence

• Forest-related occupational hazards (snake bites, injuries, zoonoses)
• Mining in some tribal areas – silicosis, accidents

• Geographical isolation – remote forests, hills, poor roads
• Shortage of health workers willing to serve in tribal areas
• Cultural and language barriers; low female literacy
• Tribal health beliefs and dependence on traditional healers

• Poverty, displacement due to development projects
• Lack of safe water and sanitation
• Low female literacy

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Q5. Functions of the Primary Health Centre (PHC)

Core Functions (IPHS – Indian Public Health Standards):

• Antenatal care (minimum 4 ANCs); TT immunization; iron-folic acid supplementation
• Institutional delivery; postnatal care
• Newborn care; Essential Newborn Care
• Distribution of contraceptives; family planning counselling
• Pregnancy registration

• Universal Immunization Programme (BCG, OPV, DPT, Hepatitis B, Measles, MR, JE)
• Growth monitoring; IMNCI
• Vitamin A supplementation; ORS for diarrhoea

• Malaria diagnosis (blood smear) and treatment
• TB – DOTS under RNTCP
• Leprosy – MDT
• HIV/AIDS – ICTC, PPTCT
• Surveillance and notification of communicable diseases

• Screening for hypertension, diabetes, cancer (oral, breast, cervical)
• NPCDCS (National Programme for Prevention and Control of Cancer, DM, CVD, Stroke)

• ARSH (Adolescent Reproductive and Sexual Health) services
• TT immunization for adolescents

• Annual health checkup of school children
• Treatment of minor ailments; referral

• Identification and management of malnutrition
• Mid-day meal coordination; ICDS linkage

• Chlorination of water sources; surveillance of water quality
• Sanitation promotion (Swachh Bharat Mission)

• Behaviour change communication; village health and nutrition days (VHNDs)

• Routine urine, blood, stool tests; sputum smear for TB; malaria blood slides; RDTs

• Free drugs from essential medicine list at PHC level

• Timely referral to CHC/District Hospital with referral transport

• Birth and death registration; maintenance of family health records

• Training of ASHA, ANM, traditional birth attendants

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Q6. Health Education Content for Ragpickers Exposed to Community Waste

• Infections from biological waste (cuts from sharps, needlestick injuries → HIV, Hepatitis B, C)
• Respiratory diseases from dust, toxic fumes, burning waste
• Skin diseases and dermatitis from chemical exposure
• Injuries from sharp objects, broken glass, needles
• Vector-borne diseases (rats, mosquitoes breed in waste)
• Musculoskeletal problems from heavy loads and poor posture
• Mental health issues – stigma, poor living conditions

1. Personal Protective Equipment (PPE):

• Always wear thick rubber gloves before touching waste
• Wear closed shoes / gumboots – never sort waste barefoot
• Wear a face mask (N95 preferred) to avoid inhaling dust and toxic gases
• Wear full-sleeved clothing to protect skin from cuts and chemicals

1. Needle and Sharp Object Safety:

• Never handle syringes or needles with bare hands
• Use tongs or thick gloves; do NOT recap needles
• Report any needlestick injury immediately for PEP (Post-Exposure Prophylaxis for HIV/Hepatitis B)

1. Hepatitis B Vaccination:

• Get vaccinated against Hepatitis B (3-dose schedule) – available free at government hospitals

1. Personal Hygiene:

• Wash hands thoroughly with soap before eating, after sorting waste
• Do NOT eat, drink or smoke at the work site
• Bathe after work; change clothing before entering home

1. Safe Waste Handling:

• Segregate waste – do not mix biomedical/chemical waste with general waste
• Report red bag / yellow bag biomedical waste to authorities; do NOT handle hospital waste
• Never burn waste – inhaling smoke from burning plastic/rubber causes lung cancer and neurological damage

1. First Aid and Wound Care:

• Any cut or wound from waste must be washed immediately with soap and water; apply antiseptic
• Report to PHC for tetanus toxoid if wound is deep or contaminated

1. Nutrition and Rest:

• Eat a balanced diet; drink clean water; avoid alcohol
• Take rest breaks; avoid working in extreme heat without shade

1. Children must NOT work at waste sites – this violates child labour laws; report to authorities
2. Rights Awareness:

• Ragpickers have the right to protective gear under the Solid Waste Management Rules 2016
• Register as informal workers to access ESIC health benefits

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Q7. Health Problems of the Aged (Geriatric Health Problems)

A. Physical Health Problems

• Hypertension (most common), coronary artery disease, heart failure, stroke
• Leading cause of death in elderly in India

• Osteoarthritis – most common; knee joint, hip joint
• Osteoporosis – especially postmenopausal women → fractures (hip, spine)
• Falls and fractures – leading cause of disability; hip fracture has 20–30% 1-year mortality

• Dementia (Alzheimer's disease, vascular dementia) – progressive cognitive decline
• Parkinson's disease
• Depression and anxiety – underdiagnosed; "geriatric depression"
• Delirium – acute confusional state; common in hospitalised elderly

• Presbyopia, cataracts, glaucoma → visual impairment; leading cause = cataract
• Presbyacusis (age-related hearing loss) → social isolation

• COPD, recurrent pneumonia (aspiration pneumonia), TB (reactivation)

• Diabetes mellitus (type 2) – very common; often asymptomatic
• Hypothyroidism
• Vitamin D deficiency → osteoporosis

• Urinary incontinence – common, underreported
• Benign Prostatic Hyperplasia (BPH) in males
• Uterovaginal prolapse in elderly women

• Higher cancer prevalence: oral, lung, colorectal, prostate, breast cancers

• Multiple chronic diseases → multiple drugs → drug interactions, adverse drug reactions, compliance issues

B. Social and Psychological Problems

• Social isolation and loneliness
• Financial dependency
• Elder abuse – physical, psychological, financial
• Loss of spouse; bereavement
• Loss of social role and purpose

C. National Programme for Health Care of Elderly (NPHCE)

• Weekly geriatric clinics at PHCs
• Dedicated geriatric wards at district hospitals
• Training of health workers in geriatric care

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Q8. Items to be Inspected at a PHC for Disposal of Biomedical Waste

1. Segregation at Source

• Colour-coded bins in all rooms generating waste:
  • Yellow bin – infectious/pathological/anatomical waste (destroyed by incineration or deep burial)
  • Red bin – contaminated recyclable waste (plastics, IV sets, tubing; sent to recycler)
  • White/Translucent puncture-proof container – sharps (needles, syringes, blades); sent to autoclave/shredder
  • Blue bin – glassware, metallic implants (broken/discarded glass; sent to recycler)
• Bins must be lined with correct colour-coded bags; not more than 3/4 full when removed

2. Sharp Disposal

• Puncture-proof, leak-proof containers (sharps boxes) available at every clinical point
• Needles not recapped after use
• Sharps boxes sealed, labelled, stored appropriately

3. Storage Area

• Dedicated biomedical waste storage area within PHC premises
• Labelled, secure; not accessible to public or animals
• Waste should not be stored for more than 48 hours

4. Treatment and Disposal Methods at PHC Level

• Needle destroyer/cutters – for sharps; available and functional?
• Autoclave/microwave – for sterilisation of waste before disposal? (If available)
• Incinerator (at higher facility or through Common Biomedical Waste Treatment Facility – CBWTF)
• Deep burial pit – for anatomical/pathological waste in areas without incineration

5. Common Biomedical Waste Treatment Facility (CBWTF)

• Is PHC tied up with a CBWTF (outsourced collection and treatment)?
• Frequency of collection by CBWTF vehicle
• Manifests/records of waste handed over maintained?

6. Records and Documentation

• BMW register – amount of waste generated per category (kg/day)
• Annual report submitted to State Pollution Control Board
• Authorization certificate from State Pollution Control Board displayed

7. Personal Protective Equipment for Staff

• Availability of gloves, masks, gowns for staff handling waste
• Hepatitis B vaccination status of all waste-handling staff

8. Liquid Waste (Effluent)

• Sewage/liquid waste from OT and labs treated before discharge to drain
• Drainage system not connected to open drains without treatment

9. Cytotoxic / Chemical Waste

• Medicines and chemical wastes stored separately in black bins
• Not mixed with other categories of waste

10. Training

• Record of training given to staff on BMW management
• Awareness of all clinical staff (doctors, nurses, lab technicians, sweepers)

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SECTION C – SHORT ANSWERS (10 × 3 = 30 Marks)

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Q9. Kangaroo Mother Care (KMC)

• KMC was introduced in Colombia in 1979 by Drs. Hector Martinez and Edzar Rey to address high infection and mortality in overcrowded neonatal units
• It is an essential element in continuum of neonatal care, especially for LBW babies

1. Skin-to-skin positioning – baby placed prone on mother's chest between her breasts; maintains warmth (thermal protection)
2. Adequate nutrition – exclusive breastfeeding; mother's own milk
3. Ambulatory care – baby discharged earlier and cared for at home; mother mobile with baby in KMC position
4. Support for mother and family – counselling, emotional support, home-based follow-up

• Prevents hypothermia (maintains temperature 36.5–37.5°C)
• Promotes breastfeeding and bonding
• Reduces neonatal infections, apnoea, and length of hospital stay
• Reduces neonatal mortality by ~40% in LBW babies
• Cost-effective; can be done by any trained mother/family member

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Q10. Goal 3 of SDG (Sustainable Development Goals)

1. Reduce global Maternal Mortality Ratio to <70 per 1,00,000 live births
2. End preventable deaths of newborns and children under 5 (NMR ≤12; U5MR ≤25 per 1000)
3. End HIV/AIDS, TB, malaria and neglected tropical diseases
4. Reduce non-communicable disease premature mortality by 1/3rd through prevention and treatment
5. Strengthen prevention and treatment of substance abuse (narcotics, alcohol)
6. Reduce road traffic injuries and deaths by half
7. Achieve universal health coverage (UHC) including financial risk protection and access to essential medicines and vaccines
8. Reduce deaths and illnesses from hazardous chemicals and environmental pollution
9. Strengthen implementation of WHO Framework Convention on Tobacco Control (FCTC)
10. Support R&D of vaccines and medicines for communicable and NCDs

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Q11. Screening Tests for Breast Cancer

• Systematic palpation of both breasts and axillary lymph nodes by trained health worker
• Recommended every 1–3 years for women 20–39 years; annually for >40 years
• Simple, low-cost; can be done at PHC level
• Sensitivity: 40–69%

• Low-dose X-ray of breast tissue
• Recommended: annually or biannually for women ≥40–50 years (age varies by guideline)
• Detects microcalcifications and masses before they are palpable
• Reduces mortality by 15–20%
• Sensitivity: 75–85%; Specificity: 90%
• Limitation: Dense breast tissue (common in Indian women) reduces sensitivity

• Monthly self-examination by the woman herself
• Best done 7–10 days after menstruation begins
• Increases awareness; not proven to reduce mortality but promotes early health-seeking
• Teach: standing before mirror + lying down positions; check for lumps, skin changes, nipple discharge

• Better than mammography for dense breast tissue
• Used as adjunct to mammography; not recommended as primary screening tool

• Recommended for high-risk women (BRCA1/2 mutation carriers, strong family history)
• Most sensitive but expensive; not for population screening

• Lump in breast, skin dimpling, nipple retraction, nipple discharge, skin changes

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Q12. Rubella Vaccine

• Rubella (German measles) is caused by Rubella virus (Togavirus)
• Major concern: Congenital Rubella Syndrome (CRS) – if mother infected in first trimester → deafness, cataracts, congenital heart disease, intellectual disability in baby

• Live attenuated vaccine (RA 27/3 strain most widely used)
• Given as: MR vaccine (Measles-Rubella) or MMR (Measles-Mumps-Rubella)

• MR vaccine: 9–12 months (1st dose), 16–24 months (2nd dose)
• MR Campaign (2017–19): One-time mass immunization of all children 9 months – 15 years

• Subcutaneous injection; 0.5 mL
• Upper arm (deltoid region)

• Seroconversion: >95%
• Duration: Lifelong (single dose may be sufficient)

• All women of childbearing age should be screened and vaccinated if non-immune
• Contraindicated in pregnancy – but inadvertent vaccination in early pregnancy does NOT warrant termination (no cases of CRS from vaccine)
• Contraindicated in immunocompromised individuals
• Avoid pregnancy for 1 month after vaccination

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Q13. Critical Path Method (CPM)

• CPM is a project management technique used in health programme planning and management
• Also called the Critical Path Analysis; related to PERT (Programme Evaluation and Review Technique)

1. Activity – a specific task that takes time and resources
2. Network diagram – activities represented as arrows/nodes showing sequence
3. Critical path – the longest path through the network; any delay on this path delays the entire project
4. Float/Slack time – the amount of time a non-critical activity can be delayed without affecting project completion
5. Earliest Start Time (EST) and Latest Finish Time (LFT) – calculated for each activity

1. List all activities required
2. Determine sequence/dependencies
3. Draw network diagram
4. Calculate EST and LFT for each activity
5. Identify the critical path (activities with zero float)
6. Monitor progress of critical activities

• Planning health programmes (e.g., immunization campaigns, hospital construction)
• Monitoring programme activities
• Resource allocation and scheduling
• Identifying bottlenecks

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Q14. Triage in Disaster Management

1. Primary triage – at site/field; quick (30 seconds per patient); assess: breathing, pulse, mental status
2. Secondary triage – at casualty collection point; more detailed assessment
3. Tertiary triage – at hospital; reassessment as conditions change

• Triage is dynamic – reassess continuously
• Triage officer must be experienced but NOT the treating physician (avoids conflict)
• Mass Casualty Incidents (MCI): when casualties exceed resources → START triage protocol used
• Documentation: triage tags attached to each casualty

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Q15. Functions of UNICEF

• Established: 1946 (originally for children in post-WWII Europe)
• Now: Permanent UN agency for children's welfare globally
• India country office: New Delhi

1. Child Survival and Development

• Immunization support (GAVI partnership, cold chain maintenance)
• Oral Rehydration Therapy promotion
• Breastfeeding promotion (Baby-Friendly Hospital Initiative)
• Prevention and management of malnutrition

1. Maternal and Newborn Health

• Support for ANC services, skilled birth attendance
• Emergency obstetric care supply support

1. Nutrition

• Therapeutic feeding centres for SAM (Severe Acute Malnutrition)
• Vitamin A supplementation, iodisation of salt, micronutrient supplementation

1. Water, Sanitation and Hygiene (WASH)

• Safe water supply programmes
• Sanitation promotion (related to Swachh Bharat Mission)
• Handwashing campaigns

1. Education

• Child-friendly schools; promoting girl child education
• Education in emergencies

1. Child Protection

• Elimination of child labour, child trafficking, child marriage
• Prevention of violence against children

1. HIV/AIDS

• Prevention of Parent-to-Child Transmission (PPTCT)
• Paediatric AIDS treatment support

1. Emergency Response and Humanitarian Action

• Delivers essential supplies (vaccines, medicines, RUTF) to disaster zones
• Psychosocial support for children in conflict/disaster

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Q16. Types of Hospital-Acquired Infections (HAI / Nosocomial Infections)

1. Catheter-Associated Urinary Tract Infection (CAUTI) – Most common HAI; Gram-negative rods (E. coli, Pseudomonas, Klebsiella); related to indwelling urinary catheter
2. Surgical Site Infection (SSI) – Staphylococcus aureus, Streptococcus; superficial, deep or organ/space
3. Ventilator-Associated Pneumonia (VAP) – Most common in ICU; Gram-negatives (Pseudomonas, Acinetobacter); related to endotracheal intubation
4. Central Line-Associated Bloodstream Infection (CLABSI) – Coagulase-negative Staphylococcus, Candida; related to central venous catheter
5. Clostridium difficile-Associated Diarrhoea (CDAD) – After antibiotic use; disrupts gut flora; produces toxins causing pseudomembranous colitis
6. MRSA (Methicillin-Resistant Staphylococcus aureus) – skin, wound, bloodstream infections; major problem in ICUs
7. Hospital-Acquired Diarrhoea – Rotavirus, Norovirus, E. coli outbreaks

• Hand hygiene (WHO 5 moments)
• Catheter care bundles; remove catheters as early as possible
• VAP bundle: head-of-bed elevation, oral decontamination, sedation vacation
• SSI: preoperative antibiotics, aseptic technique
• Antibiotic stewardship

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Q17. Essential Medicines

• First prepared: 1996
• Revised: 2003, 2011, 2015 (current)
• Contains medicines listed according to therapeutic use and level of care (Primary/Secondary/Tertiary)

1. Approved/licensed in India
2. Useful in diseases that are a public health problem in India
3. Proven efficacy and safety based on valid scientific evidence
4. Cost-effective
5. Aligned with current treatment guidelines
6. Stable under Indian storage conditions
7. Price of total treatment (not unit price) considered
8. Fixed-dose combinations generally excluded unless proven advantage
9. Categorised by level of care: Primary (P), Secondary (S), Tertiary (T)

• Guides rational prescribing and drug procurement
• Basis for Jan Aushadhi Scheme – affordable generic medicines at PHCs/hospitals
• Reduces out-of-pocket expenditure on medicines
• PMBJK (Pradhan Mantri Bhartiya Janaushadhi Kendra) – sells NLEM medicines at 50–90% lower prices

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Q18. Objectives of ICDS (Integrated Child Development Services)

• Children 0–6 years
• Pregnant and lactating mothers
• Adolescent girls (in expanded scheme)

Objectives of ICDS (as stated in Park's PSM):

1. Improve nutritional and health status of children in the age group 0–6 years
2. Lay the foundation for proper psychological, physical and social development of the child
3. Reduce the incidence of mortality, morbidity, malnutrition and school dropout
4. Achieve effective co-ordination of policy and implementation among various departments promoting child development
5. Enhance the capability of the mother to look after the normal health and nutritional needs of the child through proper nutrition and health education

Six Services Provided under ICDS (Package of Services):

1. Supplementary nutrition – 300 kcal + 8–10 g protein/day for children; 500 kcal + 25 g protein for pregnant/lactating mothers
2. Immunization – in coordination with health department (UIP)
3. Health checkup – growth monitoring, treatment of minor ailments
4. Referral services – for sick children and high-risk pregnancies
5. Nutrition and health education – for mothers/women 15–45 years
6. Non-formal pre-school education – for children 3–6 years (school readiness)

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Reference: Park's Textbook of Preventive and Social Medicine, 26th Edition — K. Park, Bhanot Publishers

Exam tips: Q1 (Dengue DHF) – write the 3 phases + WHO grading diagram; Q2 – draw a classification tree for contraceptives. All short answers need 8–10 points. Best of luck! 🍀

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COMMUNITY MEDICINE CBME - JANUARY 2026

Complete Answers (Park's PSM, 26th Ed.)

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SECTION A - LONG ESSAYS (2 × 10 = 20 Marks)

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Q1. Burden of Road Traffic Accidents in India + Risk Factors + Prevention Steps (2+4+4)

Part A: Burden of Road Traffic Accidents in India (2 marks)

• Every year nearly 1.25 million people die from road accidents worldwide
• For every death, there are 20–50 non-fatal injuries and 10–20 serious injuries requiring prolonged care
• Road traffic injuries rank as the 8th leading cause of death globally; the leading cause in persons aged 15–29 years

• Traffic accidents are the single largest cause of accidental deaths in India
• In 2015: 1,77,423 deaths due to traffic accidents (out of 4,13,457 total accidental deaths) - Park's Table 3
• India has about 1% of the world's vehicles but accounts for 6% of road accident fatalities
• Males under 25 years are almost 3 times as likely to be involved in road crashes as females of the same age
• Over 30% of RTA deaths are children and young people under 25 years
• Two-wheelers account for the highest proportion of RTA fatalities in India
• SDG 2020 target to halve road traffic deaths - India unlikely to meet this target

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Part B: Risk Factors (4 marks)

• Directly related to crash likelihood AND severity of consequences
• Pedestrians have 90% survival at 30 km/h vs. <50% survival at 45 km/h
• 30 km/h speed zones in residential areas and near schools reduce risk significantly

• Impairs reaction time, vision, judgment
• Risk of crash increases significantly above BAC of 0.04 g/dL
• Alcohol is the direct cause of 30–50% of severe road accidents
• Sobriety checkpoints and random breath testing reduce alcohol-related crashes by ~20%

• Non-use of motorcycle helmets: Helmet wearing reduces death risk by ~40%, severe injury by >70%
• Non-use of seat belts: Seatbelt use reduces fatality in front-seat by 40–50%; rear-seat by 25–75%
• Non-use of child restraints: Correct use reduces infant deaths by ~70%, small children by 54–80%

• Mobile phone use while driving increases crash risk 4-fold
• Texting while driving increases crash risk 23-fold
• Visual distraction (looking away from road for >2 seconds) is critical risk factor

• Road design defects (no pedestrian crossings, poor lighting, lack of pavements)
• Vehicle defects (faulty brakes, worn tyres, no rear-view mirrors)
• Overloading of vehicles

• Pedestrians, cyclists, motorcyclists are most vulnerable
• Children under 12 at highest risk as pedestrians

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Part C: Steps to Prevent Road Traffic Accidents (4 marks)

• National Road Safety Policy; National Road Safety Council
• India's Motor Vehicles (Amendment) Act 2019 - heavy fines for traffic violations
• Unified command for traffic enforcement

• Separate lanes for vulnerable road users (cyclists, pedestrians)
• Speed reduction measures - speed bumps, traffic calming devices
• Safe road crossings (pedestrian subways, zebra crossings with signals)
• Street lighting; clear road markings; barrier separation of oncoming traffic
• 30 km/h zones near schools, residential areas

• Mandatory crash testing standards (Bharat NCAP)
• Mandatory safety features: ABS, airbags, seat belts (all seats)
• Mandatory fitness certificates; regular vehicle inspection

• Safety education - starting from school children; "If accident is a disease, education is its vaccine" (Park's PSM)
• Driver training and licensing reform; graduated licensing for young drivers
• Enforce blood alcohol limits (BAC ≤0.03 g/dL in India for professional drivers)
• Random breath testing; sobriety checkpoints
• Strict enforcement of helmet and seatbelt laws
• Training in first aid for road accident victims

• Organized trauma care system (Golden Hour concept)
• Emergency care begins at accident site, continued during transport, concludes in hospital
• Trained ambulance crew; 108 Emergency services
• Good Samaritan Law (2016) - protects bystanders who help accident victims

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Q2. Definition of IMR + Factors Affecting IMR + Measures to Reduce IMR (1+4+5)

Part A: Definition of Infant Mortality Rate (1 mark)

"The number of deaths of infants (under 1 year of age) per 1000 live births in a given year in a given area."

• India's IMR (2019-20): ~30 per 1000 live births (SRS data)
• IMR is divided into: Neonatal (0–28 days) and Post-neonatal (29 days–1 year) mortality
• IMR is a sensitive indicator of overall health and socioeconomic development of a community

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Part B: Factors Affecting IMR (4 marks)

1. Birth weight: Single most important determinant. LBW (<2.5 kg) babies have higher mortality. Poor maternal nutrition → LBW → high mortality
2. Age of mother: IMR highest when mother is <19 years or >30 years
3. Birth order: Highest for first-born; lowest for second-born; escalates from 5th birth onward
4. Birth spacing: Short intervals → maternal malnutrition and anaemia → LBW → high mortality. Early weaning → PEM and diarrhoea
5. Multiple births (twins): Higher mortality due to LBW and complications
6. Sex of child: Neonatal mortality higher in males; post-neonatal higher in females (due to neglect of girl children in India)
7. High fertility: High fertility and high IMR go together - more children, less care per child

• Poverty is the most important socioeconomic factor
• IMR highest in slums; lowest in richer areas
• Poverty → inadequate nutrition, poor housing, lack of healthcare access
• Continuing socioeconomic development required to reduce IMR

1. Breastfeeding: Early weaning and bottle-fed infants in poor hygiene → higher mortality than breastfed infants
2. Religion and caste: Socio-cultural patterns of living affect child care practices
3. Early marriage: Teen-age mothers' babies have highest neonatal and post-neonatal mortality risk
4. Maternal education: Illiteracy is greatest barrier. Kerala experience shows maternal education plays major role in IMR decline. Educated mothers → later marriage, family planning, better child care
5. Quality of mothering: Even in poverty, efficient mothers can reduce infant mortality significantly

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Part C: Measures to Reduce Infant Mortality Rate (5 marks)

1. Early registration of pregnancy and at least 4 antenatal check-ups (ANC)
2. Prevention and treatment of maternal anaemia - IFA supplementation
3. Tetanus toxoid immunization for pregnant women
4. Nutritional supplementation; treatment of malnutrition
5. Early detection and management of high-risk pregnancies (PIH, anaemia, diabetes, multiple pregnancy)
6. Prevention of low birth weight - nutrition, rest, spacing of pregnancies
7. Advice against smoking, alcohol, drugs during pregnancy

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SECTION B - SHORT ESSAYS (6 × 5 = 30 Marks)

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Q3. Activities to Reduce HIV-TB Mortality under National AIDS Control Programme (NACP)

• ~40% of AIDS deaths globally are due to TB
• Sputum smear positivity rate lower in HIV-TB → harder to diagnose
• HIV-TB patients more likely to have extra-pulmonary TB and smear-negative TB
• Drug interactions between ARVs and anti-TB drugs (especially rifampicin)

• Screen all HIV-positive patients for TB symptoms at every visit
• Four-symptom screening: current cough, fever, night sweats, weight loss - any one = TB suspect
• Refer to RNTCP/NTEP for diagnostic evaluation (sputum smear, GeneXpert/CBNAAT, chest X-ray)

• All HIV-positive patients who are NOT on ART and do NOT have active TB are given INH 300 mg/day for 6 months
• Reduces risk of TB development by 60–70% in HIV-infected persons
• Tuberculin Skin Test (TST) positive patients benefit most

• Administrative controls: triage of coughing patients, separate waiting areas
• Natural ventilation in waiting areas; UV germicidal irradiation
• Respiratory hygiene etiquette for patients

• Bi-directional screening: All HIV patients screened for TB; All TB patients offered HIV testing
• Co-location or referral linkage between ART Centres and DOTS Centres
• Shared patient registers and referral tracking

• Anti-TB treatment first, then ART started within 2 weeks (CD4 <50) or within 8 weeks (CD4 ≥50) - reduces IRIS and mortality
• Standard RNTCP/NTEP regimen for TB
• Preferred ARV regimen for TB-HIV: TDF + 3TC + EFV (efavirenz preferred as it has fewer interactions with rifampicin)

• Prevents HIV transmission in infants → reduces HIV-TB related infant mortality

• Counselling on TB symptoms awareness
• Adherence counselling for both ART and anti-TB drugs simultaneously

• CD4 count monitoring; early detection of immunosuppression
• Treatment success rate monitoring for HIV-TB cases

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Q4. Uses of Growth Chart

• Serial weight plotted on chart reveals growth trend (upward = healthy; flat = faltering; downward = malnutrition)
• Any deviation from normal growth curve indicates need for intervention
• Normal growth = Weight within -2 SD to +2 SD of median

• Three grades of malnutrition using Road-to-Health chart:
  • Grade I: 75–90% of expected weight
  • Grade II: 61–75% (moderate)
  • Grade III: <60% (severe)
• Enables early identification before clinical signs appear

• Children showing weight faltering (flat curve for ≥3 months) are identified as at-risk
• These children get priority attention at ICDS/child health clinics

• Mothers can visually understand their child's growth trend
• Motivates mothers to attend regular follow-up at anganwadi/child health clinic
• Teaches importance of breastfeeding, complementary feeding, immunization

• Growth chart (Road-to-Health card) also records immunization dates
• Reminds parents of due vaccines at each visit

• Community-level data from growth charts used to assess ICDS programme effectiveness
• Helps identify areas of high malnutrition prevalence for targeted interventions

• Aggregated growth monitoring data gives prevalence of malnutrition at block/district level
• Feeds into NFHS and RSOC nutritional surveillance data

• Sudden weight loss after a period of normal growth may indicate an acute illness (diarrhoea, infection)
• Prompts medical evaluation

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Q5. Juvenile Delinquency

• Juvenile: Boy who has not attained age of 16 years; Girl who has not attained 18 years (Children Act 1960) - now replaced by Juvenile Justice Act 2015 (age uniformly 18 years for both sexes)

• In USA: 2% of children aged 7–17 attend juvenile courts
• In India: Statistics are inadequate but juvenile delinquency is increasing due to urbanization, industrialization, and changing cultural patterns
• Highest incidence in children aged 15 years and above
• Incidence in boys is 4–5 times more than in girls

• Hereditary defects, feeble-mindedness, physical defects, glandular imbalance
• Chromosome anomaly - XYY men (extra Y chromosome) associated with criminal tendency; suffer from severe personality disturbance

• Broken homes - death/separation of parents, step-parents, disturbed home
• Poverty - deprivation of basic needs
• Alcoholism of parents; parental neglect
• Ignorance about child care; overcrowded homes

• Absence of recreation facilities; cheap recreation; sex-thrillers
• Urbanization and industrialization - breakdown of joint family
• Cinema and television (violent content)
• Slum dwelling
• School dropout; academic failure

1. Improvement of family life: Well-adjusted family prevents delinquency. Parents prepared for parenthood; needs of children met
2. Schooling: Healthy teacher-pupil relationship. Teachers detect early signs of maladjustment. Vocational guidance
3. Social welfare services: Recreation facilities, parent-counselling, child guidance clinics, educational facilities, general health services
4. Juvenile Justice System: Juvenile courts; approved schools; borstal schools for rehabilitation (not punishment)
5. Legal measures: Juvenile Justice (Care and Protection of Children) Act 2015; POCSO Act 2012

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Q6. Problems Associated with Long-Term Illness Among the Elderly

• Cardiovascular diseases (hypertension, CAD, heart failure)
• Diabetes mellitus (Type 2)
• COPD, arthritis, osteoporosis
• Dementia, Parkinson's disease, depression
• Cancer, chronic kidney disease

• Chronic pain and disability - reduces functional capacity and mobility
• Immobility complications - pressure sores (bedsores), deep vein thrombosis, contractures, pneumonia
• Falls and fractures - especially hip fractures (femur neck); associated with 20–30% mortality within 1 year
• Polypharmacy - multiple drugs for multiple diseases → drug-drug interactions, adverse effects, non-compliance
• Nutritional deterioration - reduced appetite, malabsorption, weight loss, anaemia
• Urinary/faecal incontinence - common; causes skin breakdown, infections, social isolation
• Reduced immunity - frequent infections (pneumonia, UTI) on background of chronic disease

• Depression - most common; under-diagnosed; chronic illness → loss of independence, hope, purpose
• Anxiety - about disease prognosis, financial burden, being a burden on family
• Cognitive decline and Dementia - worsened by social isolation and physical inactivity
• Loss of self-esteem - dependence on others for daily activities (bathing, dressing, eating)

• Social isolation and loneliness - inability to participate in social/community activities
• Financial burden - high out-of-pocket expenditure on medicines and investigations for chronic diseases
• Caregiver burden - places enormous strain on family members
• Elder neglect and abuse - family may neglect chronically ill elderly due to caregiving fatigue
• Loss of productive role - retirement, bereavement → loss of social identity

• Frequent hospitalization - repeated admissions for acute exacerbations
• Delayed diagnosis - atypical presentations in elderly (e.g., silent MI, painless UTI, afebrile pneumonia)
• Geriatric syndromes - frailty, delirium, falls, incontinence, polypharmacy - often occur together

• National Programme for Health Care of Elderly (NPHCE) - weekly geriatric clinics at PHC level
• Dedicated geriatric wards at district hospitals
• Physiotherapy and rehabilitation services
• Palliative care and home-based long-term care

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Q7. Disaster Preparedness

1. Community members have the most to lose from vulnerability and most to gain from preparedness
2. First responders always come from within the community; external help may take days
3. Resources are most easily pooled at community level
4. Sustained development best achieved by allowing communities to design and manage recovery

1. Risk assessment - Evaluate risk of the country/region to various disasters (floods, earthquakes, cyclones, etc.)
2. Standards and regulations - Adopt building codes, zoning laws, safety standards
3. Communication systems - Early warning systems, emergency communication networks, mass media
4. Coordination mechanisms - Multi-agency coordination; NDRF (National Disaster Response Force); ICS (Incident Command System)
5. Financial resources - Disaster contingency funds; insurance mechanisms; NDMA allocation
6. Public education - Community awareness campaigns; school safety drills; first aid training
7. Media coordination - Information dissemination through news media; prevention of rumour/panic
8. Simulation exercises - Mock drills to test response mechanisms; table-top exercises

• Know local hazard risks; prepare family emergency kit (water, food, medicines, documents)
• Know emergency contact numbers; designated family meeting point

• NDMA (National Disaster Management Authority) - headed by Prime Minister
• Disaster Management Act 2005 - legal framework
• NDRF - specialized response force for disasters

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Q8. Health Hazards of Health Care Waste

• Most important hazard: HIV, Hepatitis B, Hepatitis C transmission via needlestick
• Health workers are at highest risk (nurses, lab technicians, waste handlers)
• Post-Exposure Prophylaxis (PEP) required immediately after HIV needlestick
• Estimated 3 million needlestick injuries/year globally to healthcare workers

• Exposure to pathological specimens, body fluids, contaminated dressings
• Causes: Tuberculosis, hepatitis, enteric infections, HIV
• Risk groups: Waste handlers, laundry workers, cleaners
• Improper waste disposal leads to community exposure (rag-pickers, open dump residents)

• Disinfectants (formaldehyde, glutaraldehyde) - skin, respiratory, eye irritants; carcinogenic
• Heavy metals (mercury from thermometers/sphygmomanometers) - neurotoxic
• Cytotoxic drugs (chemotherapy) - mutagenic, carcinogenic, teratogenic
• Anaesthetic gases (halothane, nitrous oxide) - reproductive toxicity in OT staff

• Waste from nuclear medicine departments and radiotherapy
• Radiation exposure causes malignancies, genetic mutations

• Incineration of PVC plastics → releases dioxins/furans → persistent organic pollutants → carcinogenic
• Open burning → air pollution; respiratory effects in surrounding community
• Improper dumping in open land/water → soil and groundwater contamination
• Reuse of improperly sterilised syringes → mass disease transmission (e.g., Unnao needle outbreak)

• Fear and anxiety in health workers about occupational exposure
• Stigma for those who acquire infection from healthcare waste

• Proper segregation at source (colour-coded bins)
• Hepatitis B vaccination for all healthcare workers
• Universal precautions; PPE
• Common Biomedical Waste Treatment Facilities (CBWTF)
• Needle destroyers; sharp boxes; no recapping policy

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SECTION C - SHORT ANSWERS (10 × 3 = 30 Marks)

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Q9. Elements of Health Service Evaluation

1. Adequacy - Are the inputs (facilities, manpower, medicines) sufficient to meet the needs of the population?
2. Effectiveness - To what extent have the programme objectives been achieved? (e.g., immunization coverage achieved)
3. Efficiency - Are resources being used in the most cost-effective manner? (Output per unit cost)
4. Relevance - Are the services appropriate to the actual health needs of the community?
5. Equity - Are services available and accessible to all sections of the community, including the poorest and most vulnerable?

• Process evaluation - Are activities being carried out as planned?
• Outcome evaluation - Has there been change in health status (mortality, morbidity)?
• Coverage - What proportion of the target population has been reached?

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Q10. First Aid for Burns

1. Stop the burning process - Remove from source; extinguish flames by "Stop, Drop, Roll"
2. Remove clothing and jewellery - Gently remove burning clothing NOT stuck to skin; remove jewellery before swelling
3. Cool the burn - Run cool (NOT ice cold) running water over the burn for minimum 20 minutes; ice should NOT be used (causes vasoconstriction and deepens burn)
4. Cover the burn - Cover with a clean, sterile, non-fluffy dressing or cling film; do NOT use cotton wool
5. Do NOT apply toothpaste, butter, oil, or traditional remedies - worsen the burn
6. Hydration - Conscious patient: give oral fluids; reassure
7. Chemical burns - Irrigate with copious water for 20–30 minutes; remove contaminated clothing
8. Electrical burns - Do NOT touch victim without isolating electrical source first
9. Assess severity - Use Rule of Nines (or Rule of Palms) to estimate burn area; assess depth
10. Refer immediately to hospital if: burns >15% BSA (adults), >10% (children), burns to face/hands/genitalia/circumferential burns, inhalation injury

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Q11. Application of "Rule of Halves"

• Only about 1/8th (~12.5%) of all hypertensives in the community have their BP adequately controlled
• Identifies three major gaps: detection gap, treatment gap, and control gap
• Applies to: Hypertension, Diabetes mellitus, Epilepsy, Depression, Anaemia
• Used to plan intervention strategies at each level (screening, referral, adherence support)

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Q12. Treatment of Leprosy as per Programme Guidelines (NLEP/NTEP)

• Paucibacillary (PB): 1–5 skin lesions; smear negative
• Multibacillary (MB): >5 skin lesions; smear positive

• MDT is provided free of cost through all health facilities under NLEP
• Treatment is self-administered (blister calendar packs); one monthly supervised dose at health centre
• Rifampicin is the most bactericidal drug; clofazimine also has anti-inflammatory properties
• Dapsone monotherapy no longer used due to resistance
• After completing MDT, patient is declared Released from Treatment (RFT)

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Q13. Eligible Couple

• In family planning programmes, the eligible couple is the basic unit for family planning services
• The Eligible Couple Register (ECR) is maintained by the ANM (Auxiliary Nurse Midwife) for each sub-centre
• Every eligible couple is visited by the ANM/ASHA to:
  • Assess their family planning needs
  • Counsel on appropriate contraceptive method
  • Provide spacing or terminal method as required
  • Ensure spacing if couple has <2 children
  • Encourage sterilization if family is complete

• Target number of eligible couples = approximately 160–170 per 1000 population
• Forms basis for calculating demand for contraceptives and family planning targets

1. High parity couples (3+ children)
2. Very young couples (wife <20 years)
3. Couples with unmet need for family planning

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Q14. Identification of "At-Risk" Infants

1. Birth weight less than 2.5 kg (LBW)
2. Twins (multiple births)
3. Birth order 5 and above (high parity)
4. Artificial feeding (bottle-fed, not breastfed)
5. Weight below 70% of expected weight (Grade II and Grade III malnutrition)
6. Failure to gain weight during three successive months (weight faltering)
7. Children with PEM (protein-energy malnutrition) or diarrhoea
8. Working mother / one-parent family (inadequate child care)

• Large number of infants at child health clinics makes it impossible to give equal attention to all
• At-risk babies need priority attention, more frequent visits, intensive nutritional support
• Early identification prevents mortality and long-term developmental disability

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Q15. Zero Budget Approach

• Traditional: Previous year's budget + increment
• Zero-Budget: EVERY activity justified from scratch each year

1. Identify Decision Units (e.g., each PHC programme, each vertical programme)
2. Prepare Decision Packages - justify each activity, its cost, and benefit
3. Rank all decision packages by priority
4. Allocate funds based on priority ranking within available total budget

• Eliminates redundant/ineffective programmes
• Ensures optimal resource allocation based on evidence
• Promotes accountability and efficiency
• Identifies low-priority activities for elimination or scale-down

• Very time-consuming and requires detailed documentation
• Difficult to implement in large government bureaucracies

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Q16. Six Essential Elements of Primary Health Care

1. Education about prevailing health problems and methods for preventing and controlling them
2. Promotion of food supply and proper nutrition - adequate food, basic nutrition; prevention of malnutrition
3. Adequate supply of safe water and basic sanitation - safe drinking water, sanitation facilities
4. Maternal and child health care, including family planning - ANC, safe delivery, child health, FP services
5. Immunization against major infectious diseases - Universal immunization programme (UIP)
6. Prevention and control of locally endemic diseases - malaria, TB, leprosy, filariasis, etc.

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Q17. Objectives of IPHS for Primary Health Centres

1. To provide comprehensive primary health care to the community through the PHC
2. To achieve and maintain an acceptable standard of quality of care
3. To make the services more responsive and sensitive to the needs of the community
4. To provide 24-hour services including emergency services at PHC level (Type B PHC)
5. To ensure availability of essential drugs, equipment, and diagnostic facilities at all PHCs
6. To define minimum staffing norms (staffing pattern) for PHCs to provide quality care
7. To monitor and improve the functioning of PHCs through defined standards and inspections
8. To ensure referral linkages - timely referral with transport to CHC/District Hospital
9. To strengthen maternal and child health services - 24-hour delivery, emergency obstetric care
10. To make PHC a hub for community health activities - outreach, VHND, school health

• Physical infrastructure (building, space, utilities)
• Human resources (staffing)
• Equipment and supplies
• Drugs and diagnostics
• Support services (ambulance, waste disposal)
• Quality assurance

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Q18. Contribution of Ford Foundation in India

• One of the earliest and most significant contributions was funding and supporting family planning programmes in India - this was its most impactful health contribution
• Provided technical and financial assistance to the Government of India for developing family planning policy in the 1950s-60s
• Supported research on contraceptive acceptability and demographic studies

• Supported the Green Revolution through funding agricultural research (linked to ICAR, IARI)
• Contributed to food security which reduced malnutrition and hunger-related deaths

• Funded Indian universities, research institutions
• Supported establishment of management institutes (IIMs)
• Scholarships and fellowships for Indian scholars abroad

• Supported establishment of International Institute for Population Sciences (IIPS), Mumbai
• Funded demographic surveys and census analysis
• Supported the Population Foundation of India

• Funded programmes for women's rights, reproductive health, gender equality
• Supported NGOs working on maternal health, female literacy

• Strengthened civil society organizations working in health and social development

Reference: Park's Textbook of Preventive and Social Medicine, 26th Edition - K. Park, Bhanot Publishers

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• Q1 (RTA): Must mention SDG Road Safety target + draw the accident triad diagram
• Q2 (IMR): Define clearly first, then use a table format for factors - biological/economic/social
• Q3 (HIV-TB): Focus on the "3 I's" - INH preventive therapy, Intensified case finding, Infection control
• Q16: Alma-Ata 8 elements - memorise as a list
• Q11 (Rule of Halves): Draw the step-down table - examiners love it

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COMMUNITY MEDICINE CBME - NOVEMBER 2025

Complete Answers (Park's PSM, 26th Edition)

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SECTION A - LONG ESSAYS (2 × 10 = 20 Marks)

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Q1. Classification of Epidemiological Studies + Steps in RCT + Blinding (2+5+3)

Part A: Classification of Epidemiological Studies (2 marks)

EPIDEMIOLOGICAL STUDIES
├── OBSERVATIONAL STUDIES (no intervention)
│   ├── Descriptive Studies
│   │   ├── Case Reports / Case Series
│   │   ├── Cross-sectional (Prevalence) Study
│   │   └── Ecological (Correlational) Study
│   └── Analytical Studies
│       ├── Case-Control Study (retrospective)
│       └── Cohort Study (prospective/retrospective)
└── EXPERIMENTAL / INTERVENTIONAL STUDIES
    ├── Randomised Controlled Trial (RCT) – in patients
    ├── Field Trial – in healthy persons
    └── Community Trial – in communities

• Observational studies - investigator observes without intervening
• Experimental studies - investigator allocates the intervention/exposure

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Part B: Steps in the Conduct of a Randomised Controlled Trial (5 marks)

• Population, Intervention, Comparator, Outcome
• Example: "Does Drug X reduce 30-day mortality in severe pneumonia compared to standard care?"

• Inclusion criteria - who qualifies for the trial (diagnosis, age, severity)
• Exclusion criteria - contraindications, pregnancy, terminal illness, inability to consent

• Ethical committee (IRB) approval mandatory
• Written informed consent from all participants
• Clinical trial registration (CTRI in India / ClinicalTrials.gov)

• Random allocation of participants to:
  • Study group (receives intervention/treatment)
  • Control group (receives placebo or standard care)
• Methods: Simple randomisation (coin flip, random number table), Block randomisation, Stratified randomisation
• Purpose: Eliminates selection bias; ensures comparable groups at baseline

• Concealing the allocation sequence from those enrolling participants
• Prevents subversion of randomisation
• Methods: Sealed opaque envelopes, central telephone randomisation

• Measure baseline characteristics (age, sex, co-morbidities, disease severity)
• Ensures comparability of both groups; documents balance

• Administer intervention to study group; placebo/standard care to control group
• Follow-up for defined period; monitor for outcomes AND adverse effects
• Maintain adherence; minimise dropouts

• Primary outcome: main endpoint (e.g., mortality, cure rate)
• Secondary outcomes: other endpoints (e.g., hospital stay, adverse effects)
• All outcomes measured by identical methods in both groups

• All participants analysed in the group to which they were randomised, regardless of compliance
• Prevents bias from dropouts or non-compliance
• Statistical analysis: Chi-square, t-test, survival analysis, relative risk

• Follow CONSORT guidelines (Consolidated Standards of Reporting Trials)
• Report CONSORT flow diagram showing participant journey
• Report Number Needed to Treat (NNT); Confidence Intervals; P-values

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Part C: Blinding in RCT (3 marks)

• Identical-looking placebo tablets/capsules (same shape, colour, taste)
• Masked syringes/infusions
• Independent outcome assessors unaware of group allocation

• Double-blinding is the gold standard for RCTs of drug efficacy
• Prevents differential reporting of symptoms by patients
• Prevents differential investigation or treatment by clinicians
• When blinding is impossible, pre-specified objective outcomes should be used

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Q2. Classification of Health Communication + Methods in Mass Health Education Approach (3+7)

Part A: Classification of Health Communication (3 marks)

METHODS IN HEALTH COMMUNICATION
├── 1. INDIVIDUAL APPROACH
│   ├── Personal interviews (Doctor-patient consultation)
│   ├── Home visits by ANM/health worker
│   └── Counselling sessions
│
├── 2. GROUP APPROACH
│   ├── Lectures / Talks
│   ├── Group discussions (6-12 members)
│   ├── Demonstrations (how-to procedures)
│   ├── Symposia, workshops, seminars
│   ├── Drama / role play
│   └── Village meetings / Gram Sabha
│
└── 3. MASS APPROACH
    ├── Print Media: Pamphlets, posters, leaflets, booklets, newspapers
    ├── Electronic/Broadcast Media: Radio, Television, Cinema
    ├── New/Social Media: Internet, SMS, social media apps
    └── Traditional/Folk Media: Street theatre (Nukkad Natak), puppetry, folk songs

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Part B: Methods in Mass Health Education Approach (7 marks)

• Colourful, eye-catching visual message
• Simple, single message; memorable slogan
• Placed at strategic locations (bus stops, markets, PHC walls)
• Advantage: Permanent display; repeated exposure
• Disadvantage: Requires literacy; cannot explain complex topics

• Contains more detailed information than posters
• Distributed at health centres, schools, community gatherings
• Can be taken home and read at leisure
• Disadvantage: Requires literacy; often discarded

• Wide circulation; reaches literate population
• Health columns, feature articles, advertisements
• Good for urban, educated audiences

• Series of illustrated boards used by health workers
• Useful for semi-literate audiences
• Guides health worker through a structured educational session

• Advantages: Wide reach including illiterate/rural population; low cost; can reach people in homes/fields; regional language broadcasts
• Used for: Health news, drama serials with health messages (e.g., "Tinka Tinka Sukh"), jingles
• Disadvantage: Auditory only; no visual demonstration; no feedback

• Most powerful mass medium - combines audio + visual
• Reaches even illiterate audiences through visual demonstration
• Doordarshan - national health campaigns (Pulse Polio, WASH, tobacco control)
• Health-related serials and documentaries (Swasthya Swara, etc.)
• Disadvantage: Expensive; needs electricity; passive watching

• Health documentaries shown before main feature
• Captive audience; audio-visual; emotional impact
• Short health films for specific campaigns (family planning, malaria, AIDS)

• Facebook, Twitter, YouTube, WhatsApp - for health messaging
• Mass reach, low cost, rapid dissemination
• Used for COVID-19 awareness, vaccination campaigns
• Disadvantage: Digital divide; misinformation spread

• Text message reminders for immunization, ANC appointments
• Interactive voice response (IVR) systems
• Very effective for low-literacy populations

• Short plays performed in public places (markets, bus stands)
• In local language; uses humour and drama to convey health messages
• High participation and emotional engagement
• Used for: sanitation, tobacco control, family planning

• Used with children and rural adults
• Kolkata puppet shows for health promotion in West Bengal

• Health messages woven into traditional music
• ANMs use folk songs during VHNDs and health camps

• Health exhibitions at fairs, melas, community events
• Models, charts, specimens showing health-disease relationships
• Government health fairs (e.g., Arogya Mela)

• Message must be simple, specific, and actionable
• Use appropriate language (local dialect)
• Combine multiple channels for reinforcement
• Pair awareness creation (mass media) with behaviour support (individual/group methods)
• Evaluate impact through KAP (Knowledge, Attitude, Practice) surveys

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SECTION B - SHORT ESSAYS (6 × 5 = 30 Marks)

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Q3. Adverse Events Following Immunization (AEFI)

• All AEFIs must be reported to the district immunization officer
• Serious AEFIs (hospitalisation, disability, death) must be investigated by an AEFI investigation committee
• National AEFI Secretariat - Ministry of Health; Brighton Collaboration criteria used for causality assessment
• Purpose: maintain public trust in vaccines; improve vaccine safety monitoring

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Q4. Concept of Well-being

• Absence of disease, disability, or infirmity
• Adequate nutrition, fitness, energy
• Normal physiological functioning
• Measured by: BMI, blood pressure, haemoglobin, activity levels

• Ability to think clearly, make decisions, cope with stress
• Positive emotions, purpose, self-esteem
• Absence of mental illness
• WHO: "Mental health is a state of well-being in which every individual realizes his or her own potential, can cope with the normal stresses of life, can work productively and fruitfully, and is able to make a contribution to her or his community"

• Ability to form meaningful relationships
• Social support networks; family and community connectedness
• Participation in social roles; freedom from discrimination

• Sense of purpose and meaning in life
• Inner peace; values and beliefs that guide living

• Life satisfaction; happiness
• Measured by: Quality of Life (QoL) scores, WHO-5 Well-being Index

• Dubos introduced the concept of "positive health" - optimal functioning, not just absence of disease
• Well-being is actively constructed, not just passively maintained
• Social determinants of health (income, education, housing, environment) are key determinants of well-being

• Quality of Life (QoL) tools: SF-36, WHOQOL-BREF
• Human Development Index (HDI) - incorporates health, education, income
• Gross National Happiness (GNH) - Bhutan's measure

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Q5. Differences between Quarantine and Isolation + Examples

• Smear-positive TB patient isolated until sputum converts to negative
• COVID-19 confirmed cases isolated for 10–14 days
• Smallpox cases (historically) in isolation hospitals

• Contacts of COVID-19 cases quarantined for 14 days (longest incubation period = 14 days)
• Contacts of cholera case quarantined for 5 days (incubation period)
• Ships arriving from infected ports kept under quarantine (maritime quarantine)
• International travellers from yellow fever endemic areas quarantined if unvaccinated

• Segregation of a class of persons less than the whole group
• Surveillance: close medical/health supervision without restriction of movement
• Personal surveillance: periodic reporting to health authority

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Q6. Screening: Definition + Differences from Diagnostic Test

• Screening is applied to apparently healthy/asymptomatic persons
• It is NOT diagnostic; a positive screen requires a confirmatory diagnostic test
• Screening tests must be: Simple, rapid, inexpensive, acceptable, valid (sensitive + specific)

1. Condition should be an important health problem
2. Accepted treatment for recognized disease should exist
3. Facilities for diagnosis and treatment must be available
4. Recognizable latent or early symptomatic stage
5. Suitable screening test or examination available
6. Test must be acceptable to the population
7. Natural history of the condition must be adequately understood
8. Agreed policy on whom to treat
9. Cost of case finding must be economically balanced
10. Case finding is a continuous process, not a "once and for all" project

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Q7. Role of Family in Health and Disease

1. Biological role: Reproduction; genetic inheritance; provides the gene pool
2. Nutritional security: Family provides food, ensures adequate nutrition of members (especially children and elderly)
3. Psychological support: Emotional buffer against stress; mental health protection; sense of belonging
4. Socialisation: Family teaches health behaviour - hygiene habits, diet practices, health-seeking behaviour
5. Economic support: Financial assistance during illness; prevents catastrophic health expenditure
6. Caregiving: Home-based care for sick, elderly, disabled members
7. Health education: Family is the primary unit for transmitting health knowledge and values

1. Transmission of communicable diseases: Shared living → droplet, contact, faecal-oral transmission (TB, diarrhoea, typhoid spread within families)
2. Genetic diseases: Consanguineous marriages → autosomal recessive diseases (sickle cell, thalassaemia, PKU)
3. Shared environmental hazards: Indoor air pollution, contaminated water source, overcrowding → respiratory and GI diseases in all family members
4. Unhealthy lifestyle transmission: Tobacco use, alcoholism, poor dietary habits, sedentary behaviour transmitted across generations
5. Psychosocial dysfunction: Broken families, domestic violence, child abuse → mental health disorders, juvenile delinquency
6. Barriers to care: Family decision-making may delay seeking care (e.g., decision to seek medical care for a daughter/elderly member may be delayed by male head of family)
7. Problem family: A family where one or more adverse factors (poverty, mental illness, alcoholism, criminal behaviour) create a cycle of health and social problems for all members

• Family physician concept: doctor as family doctor providing comprehensive, continuing care
• Family assessment tools: Family APGAR (Adaptability, Partnership, Growth, Affection, Resolve)

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Q8. Diseases Caused by Dust Exposure + Bagassosis

Part A: Classification of Dust-Related Diseases

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Part B: Bagassosis (5 marks)

• Affects workers in sugar mills and paper/board factories using bagasse as raw material
• India, Caribbean, South Africa - major sugar-producing countries have reported cases

• Onset: 4–8 hours after exposure
• Fever, chills, malaise
• Dry cough, breathlessness (dyspnoea)
• Bilateral fine crepitations on auscultation
• Chest X-ray: Bilateral fine nodular infiltrates
• Symptoms resolve in 1–2 weeks if exposure ceases

• Progressive dyspnoea, cough, weight loss
• Pulmonary fibrosis with restrictive ventilatory defect
• Cor pulmonale in advanced cases

• Chest X-ray: Bilateral infiltrates; later fibrosis
• PFTs: Restrictive pattern (reduced FVC, FEV1/FVC normal or increased)
• Precipitating antibodies against T. sacchari
• Bronchoalveolar lavage: lymphocytosis

• Remove from exposure (most important)
• Corticosteroids (prednisolone) in acute and severe chronic cases
• Bronchodilators for symptomatic relief

• Proper drying and storage of bagasse (prevent mould growth)
• Dust suppression measures; local exhaust ventilation
• Respiratory protective equipment (masks/respirators)
• Pre-employment and periodic medical examination

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SECTION C - SHORT ANSWERS (10 × 3 = 30 Marks)

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Q9. Deprofessionalization of Medicine

1. Knowledge monopoly - Medical knowledge is increasingly available to the public through internet, patient groups, health literacy campaigns; patients now challenge doctors
2. Autonomy - Physicians are increasingly subject to regulation, audit, protocols, guidelines, and insurance company oversight
3. Self-regulation - External regulation by government, courts, media, and consumer groups replaces self-governance

• Rise in health consumerism and patient rights movement
• Internet-based medical information (patients come with "Dr Google" diagnoses)
• Corporate medicine - doctors as employees of hospitals, not independent practitioners
• Legal accountability - malpractice litigation
• Evidence-based guidelines - reducing clinical discretion
• Paramedical professionals taking on clinical tasks (nurse practitioners, pharmacist prescribers)
• Health insurance/managed care systems controlling clinical decisions

• Changes the doctor-patient relationship from paternalistic to partnership model
• Drives patient-centred care
• Challenges medical education to incorporate communication skills and shared decision-making

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Q10. Disability Adjusted Life Years (DALYs)

• YLL (Years of Life Lost) = years of life lost due to premature mortality
• YLD (Years Lived with Disability) = years lived with illness, disability, or injury, weighted by severity

• A 30-year-old who dies of TB (expected to live to 70) = 40 YLL
• A person with moderate hearing loss for 10 years (disability weight 0.2) = 10 × 0.2 = 2 YLD
• Total burden = YLL + YLD

• Range from 0 (perfect health) to 1 (death)
• Assigned by expert consensus (GBD study); e.g., blindness = 0.6, mild anaemia = 0.004

• Combines mortality AND morbidity into a single metric - more comprehensive than mortality alone
• Allows comparison of disease burden across diseases and countries
• Used to prioritize health interventions (diseases with highest DALYs get priority)
• One DALY = one lost year of "healthy" life
• India's top DALY contributors: cardiovascular diseases, infectious diseases (TB, diarrhoea), neurological disorders, injuries

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Q11. Importance of Migration Studies

1. Separating genetic from environmental factors:
   • If migrants develop the disease pattern of the new country → environment is important
   • If migrants retain the disease pattern of the country of origin → genetics is important
   • Classic example: Japanese migrants to Hawaii and USA showed increased colorectal and breast cancer (like Americans) and decreased gastric cancer → diet/environment is more important than genetics
2. Identifying disease risk factors:
   • Migrants experience a change in many risk factors simultaneously (diet, lifestyle, pollution)
   • Comparing migrants vs. non-migrants identifies which exposures are responsible
3. Studying acculturation and health:
   • First-generation migrants often healthier than native-born ("healthy migrant effect")
   • Second-generation migrants acquire host country disease patterns
4. Public health planning:
   • Understanding health needs of migrant populations (rural-urban, international)
   • Screening programmes for imported diseases
   • Targeting services for vulnerable migrant workers
5. Chronic disease epidemiology:
   • Critical evidence for role of diet in cancer (colorectal, breast)
   • Evidence for role of lifestyle in cardiovascular disease (Ni-Hon-San study: Nippon-Honolulu-San Francisco)

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Q12. Passive Immunity

• Provides immediate protection (unlike active immunity which takes 2–3 weeks)
• Protection is temporary (no immunological memory)
• No participation of the recipient's own immune system

• ATS (Anti-Tetanus Serum) / Tetanus Immunoglobulin (TIG) - post-wound prophylaxis in unvaccinated individuals
• HBIG (Hepatitis B Immunoglobulin) - post-exposure prophylaxis; newborns of HBsAg+ mothers
• Rabies Immunoglobulin (RIG) - given with wound infiltration after Category III animal bite
• Snake antivenom - for snakebite treatment
• VZIG (Varicella-Zoster Immunoglobulin) - for immunocompromised + exposed to chickenpox

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Q13. Role of Millets in Management of Undernutrition

1. Energy-dense weaning foods: Ragi malt/porridge = high calorie, low bulk → ideal for children with PEM
2. Calcium supplementation: Ragi is the richest plant source of calcium (344 mg/100g) → prevents rickets/osteoporosis; ideal for preventing calcium deficiency in vegetarian diets
3. Iron deficiency anaemia: Bajra and ragi contain iron → complement IFA supplementation in anaemic children/women
4. Amino acid profile: Sorghum and bajra provide quality protein for growth
5. Low glycaemic index: Millets have low GI → slow glucose release → suitable for diabetic undernutrished patients
6. ICDS supplementary nutrition: Many states include ragi/bajra in supplementary nutrition for children at anganwadi centres
7. Food security in dryland farming: Millets are drought-resistant → ensure food availability in areas where rice/wheat fail
8. POSHAN Abhiyaan and Millets: Government of India declared 2018 as National Year of Millets; 2023 as International Year of Millets (UN) - promotes millets in school mid-day meals and ICDS

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Q14. Hidden Hunger

• The person appears "well-fed" (not underweight, not wasted) but suffers from micronutrient deficiencies
• "Hidden" because it is not visible to the naked eye - unlike wasting or stunting

• India has high burden: >50% women anaemic; 75% children under 5 anaemic (NFHS-5)
• Iodine deficiency: 200+ million at risk before universal salt iodisation
• Vitamin A deficiency affects ~10–15% children under 5

• Dietary diversification - increased fruits, vegetables, pulses, animal products
• Food fortification - iodised salt, iron-fortified flour, rice fortification (PM POSHAN)
• Supplementation - IFA tablets, Vitamin A programme, zinc supplementation
• Biofortification - crops bred to have higher micronutrient content (iron-biofortified rice, zinc wheat)
• POSHAN Abhiyaan (National Nutrition Mission) - targets all forms of malnutrition including hidden hunger

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Q15. Methods for Controlling Spread of Scabies

• First line: Permethrin 5% cream - applied from neck to toe; leave for 8–14 hours; repeat after 1 week
• Alternative: Benzyl benzoate 25% emulsion (India - commonly used); applied from neck to toe; repeat 24 hours later
• Oral Ivermectin: 200 mcg/kg single dose; repeat after 2 weeks - for crusted/Norwegian scabies or mass treatment
• Treat all household members simultaneously (even if asymptomatic) to prevent reinfestation

• All household contacts and sexual partners treated simultaneously on the same day
• Contact tracing: Sexual contacts for genital scabies

• Wash all clothing, bed linen, towels in hot water (>50°C) and dry in hot dryer
• Items that cannot be washed: seal in plastic bags for 72 hours (mites die without human host)
• Vacuum carpets, mattresses

• Regular bathing (reduces mite load)
• Avoid sharing clothing, bedding, towels

• Oral Ivermectin preferred for mass treatment in schools, prisons, slums, nursing homes
• Treat all residents and staff simultaneously

• Educate community on mode of transmission and prevention
• Promote early treatment-seeking
• Improve hygiene and reduce overcrowding

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Q16. Pictorial Representation of Sanitation Barrier

         FAECES (Source of pathogens)
              |
    __________|__________
    |          |          |
  FLIES      FIELDS      FLUIDS
    |      (Fingers)      |
    |          |          |
    |______FOOD___________|
                |
             FINGERS
                |
        [SANITATION BARRIER]
        ┌────────────────────────────────────┐
        │  • Sanitary latrines (break F1)    │
        │  • Safe water supply (break F4)    │
        │  • Hand washing (break F3,F5)      │
        │  • Food hygiene (break F2,F4)      │
        │  • Fly control (break F2)          │
        └────────────────────────────────────┘
                |
              MOUTH
         (HUMAN HOST)

1. Fluids (contaminated water)
2. Fields (soil contaminated with faeces; bare feet contact)
3. Flies (mechanical vectors carrying faecal pathogens to food)
4. Fingers (unwashed hands - faecal-oral route)
5. Food (contaminated food/utensils)

• Sanitary disposal of faeces (latrines, sewers) - eliminates source
• Safe water supply or water treatment - breaks fluid route
• Handwashing with soap - breaks finger route
• Food hygiene (covering, cooking) - breaks food/fly route
• Fly control (screens, insecticides) - breaks fly route
• Personal hygiene (footwear) - breaks fields route

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Q17. Standard Normal Curve

• When haemoglobin values (or any biological measurement) from a very large population are plotted as a frequency distribution with narrow class intervals, the result is a smooth, symmetrical, bell-shaped curve called the normal curve

1. Bell-shaped, perfectly symmetrical
2. Mean = Median = Mode (all coincide at the centre)
3. Asymptotic to the X-axis (never touches the baseline)
4. The curve has one peak (unimodal)
5. Completely described by two parameters: mean (μ) and standard deviation (σ)

• Standardized form of normal curve with: Mean = 0, SD = 1
• Any normally distributed variable can be converted to Z using:

• Total area = 1; P = 0.05 corresponds to Z = ±1.96 (used in significance testing)

• Defining normal reference ranges (e.g., normal haemoglobin = mean ± 2 SD)
• Setting cut-off values for screening
• Basis for hypothesis testing (t-test, z-test)
• Reference ranges in WHO growth charts

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Q18. Methods of Sampling

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Main Methods of Sampling:

• Each unit in the population has an equal and independent chance of selection
• Method: Lottery method or Table of Random Numbers
• Advantage: Unbiased; most statistically pure
• Disadvantage: Requires complete sampling frame; impractical for large scattered populations

• Pick every Kth unit at regular intervals; first unit selected randomly
• K = Population / Sample size
• Example: To take 10% sample from a list of 1000 houses → select every 10th house (starting at random from 1–10)
• Advantage: Simple and quick; no need for random number table after first selection
• Disadvantage: If population has a periodic pattern matching K → bias

• Population divided into strata (subgroups) based on a characteristic (age, sex, religion, socioeconomic status)
• Random sample drawn from each stratum proportionately
• Advantage: Ensures representation of all subgroups; reduces sampling error
• Disadvantage: Requires prior knowledge of strata distribution

• Population divided into natural clusters (villages, schools, wards)
• Random selection of clusters; ALL units within selected clusters studied
• Advantage: Feasible when sampling frame unavailable; less travel cost
• Disadvantage: Higher sampling error than simple random sampling
• Used in: EPI (Expanded Programme on Immunisation) Coverage surveys - 30×7 cluster sampling

• Sampling done in stages (e.g., state → district → PHC → village → household)
• Each stage uses random selection
• Used in NFHS (National Family Health Survey)

• Investigator selects units based on personal judgement
• No statistical basis; prone to bias

• Whoever is available/accessible
• Quick but unrepresentative

• Used for hard-to-reach populations (IV drug users, sex workers)
• Each participant recruits the next

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Reference: Park's Textbook of Preventive and Social Medicine, 26th Edition - K. Park, Bhanot Publishers

• Q1 (RCT) - Draw the CONSORT flow diagram; mention ITT principle
• Q2 (Mass Health Education) - Give 5 media types with advantages/limitations
• Q5 (Quarantine vs Isolation) - Table format is best
• Q10 (DALY) - Write the formula: DALY = YLL + YLD and explain both components
• Q16 (Sanitation barrier) - Draw the F-diagram: Faeces → 5 F's → Mouth with barriers at each step
• Q17 (Normal curve) - Draw the bell curve and mark 68%, 95%, 99.7% areas