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COMMUNITY MEDICINE - COMPLETE EXAM ANSWERS

(Park's Preventive & Social Medicine - Based)

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LONG ESSAYS (10 marks each)

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Q1. 50 cases of diarrhoea were reported in 3 days from a village to the Primary Health Centre. As a Medical Officer, how do you investigate the epidemic and what are the control measures to be taken?

DEFINITION

STEPS IN EPIDEMIC INVESTIGATION

• Examine the cases clinically.
• Collect specimens (stool, blood, water samples) and send for lab investigation.
• Confirm it is truly diarrhoea and rule out other causes.

• Compare the current number of cases (50 in 3 days) with the expected (endemic) level.
• If numbers exceed the expected threshold, declare it an epidemic.

• Establish a working case definition: e.g., "any person in the village with 3 or more loose stools per day for the past 3 days."

• Go house to house in the village.
• Search for additional cases, deaths, and contacts.
• Prepare a line listing (name, age, sex, address, date of onset, symptoms, source of water/food).

• Person: Who is affected - age, sex, occupation, food habits.
• Place: Map the cases geographically - identify clustering around a well, tank, or food stall.
• Time: Draw an epidemic curve (cases vs. date of onset).
  • A point-source epidemic shows a single sharp peak.
  • A propagated epidemic shows multiple successive peaks.

• Based on descriptive analysis, hypothesize the source and mode of transmission.
• e.g., "Contaminated pond water is the likely source."

• Case-control study: compare exposure history (food/water) of cases vs. controls.
• Analytical epidemiology - calculate Relative Risk or Odds Ratio.

• Inspect the water source, sanitation facilities, latrines, food handling practices.
• Collect water/food samples for bacteriological/chemical analysis.

• Identify the causative agent, source, vehicle of transmission, and contributing factors.

• Report to the District Health Officer and State.
• Maintain records - Weekly Disease Reporting, IDSP (Integrated Disease Surveillance Programme).

CONTROL MEASURES

1. Treatment of cases - ORS, zinc supplementation, IV fluids if severe; antibiotics if cholera/dysentery suspected.
2. Chlorination of water supply - super-chlorinate the suspected water source (bleaching powder).
3. Safe water provision - supply bottled/boiled water; restrict use of contaminated source.
4. Safe food practices - prohibit sale of suspected food; close implicated food stalls.
5. Oral Rehydration Therapy (ORT) - distribute ORS packets in the community.
6. Health education - hand washing with soap, boiling water, avoiding open defecation.

1. Sanitation improvement - repair broken latrines, ensure sewage is not contaminating the water supply.
2. Chlorination of wells - 1 mg/L residual chlorine.
3. Vector control - fly control measures.

1. Safe piped water supply to all households.
2. Total sanitation - open defecation free village.
3. Immunization - oral cholera vaccine if cholera is confirmed.
4. Surveillance - continue monitoring for 2 incubation periods after last case.
5. Final Report - document lessons learned and submit to authorities.

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Q2. Describe the Principles in Prevention and Control of Occupational Diseases.

DEFINITION

LEVELS OF PREVENTION (Leavell & Clark)

A. PRIMARY PREVENTION (Before Disease Occurs)

• Replace a hazardous substance with a safer one.
• e.g., replace white lead in paints with titanium dioxide.

• Enclose hazardous processes in separate areas.
• Prevent worker exposure by physical barriers.

• Capture and remove dust, fumes, vapors at the point of generation.
• e.g., exhaust fans in factories, mines.

• Dilute contaminated air with fresh air.

• Suppress dust by wetting the work area (e.g., wet drilling in mines).

• Regular cleaning to prevent accumulation of dust/chemicals.

• Last line of defense: masks, gloves, helmets, goggles, aprons, earplugs.
• Must be appropriate to the hazard.

• Blood/urine tests to detect early absorption of toxic substances (e.g., blood lead levels).

• Educate workers about hazards and safe work practices.

• Identify susceptible individuals before placing them in hazardous work.
• Contraindicate asthmatics from dusty environments.

• Factories Act, Mines Act - set standards for TLV (Threshold Limit Values), working hours, PPE.

B. SECONDARY PREVENTION (Early Detection)

• Routine check-ups for workers in hazardous occupations.
• e.g., chest X-ray for miners every year to detect silicosis early.

• Regular blood lead levels for lead-exposed workers.
• Spirometry for workers exposed to dust/gases.

• Measure levels of hazards in the workplace (air sampling).
• Ensure levels are below TLV (Threshold Limit Values).

C. TERTIARY PREVENTION (Disability Limitation & Rehabilitation)

• Prompt treatment of detected diseases.
• Removal from exposure if disease diagnosed.

• Medical, social, vocational rehabilitation.
• Retraining for alternative, less hazardous work.

• Legal provision for compensating workers with occupational disease.

CONTROL OF SPECIFIC HAZARDS (Summary)

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SHORT ESSAYS (5 marks each)

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Q3. Describe Interventions in Health Promotion with Suitable Examples.

DEFINITION (Ottawa Charter, 1986)

LEVELS OF INTERVENTION

• Health education (e.g., anti-smoking campaigns)
• Counseling (e.g., dietary counseling for obesity)
• Behavior change communication

• Community mobilization (e.g., village health committees)
• Social support groups (e.g., self-help groups for TB patients)

• Legislative measures (e.g., ban on smoking in public places)
• Taxation of tobacco/alcohol

FIVE ACTION AREAS (Ottawa Charter)

1. Building Healthy Public Policy - Health in all policies; e.g., food labeling laws, Clean Air Act.
2. Creating Supportive Environments - Making healthy choices the easy choices; e.g., safe parks, clean workplaces.
3. Strengthening Community Action - Empower communities; e.g., ASHA workers, village health and nutrition days.
4. Developing Personal Skills - Education and life skills; e.g., school health programs, WASH education.
5. Reorienting Health Services - Shift from curative to preventive; e.g., PHC focus on wellness.

EXAMPLES OF INTERVENTIONS

• Pulse Polio Programme - community-wide immunization
• Swachh Bharat Mission - building toilets (sanitation promotion)
• Mid-Day Meal Scheme - nutritional intervention in schools
• Tobacco-Free Zones - policy/regulatory intervention
• Anganwadi Centers - child nutrition and health promotion

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Q4. Role of Emporiatrics in the Control of Diseases.

DEFINITION

ROLE IN DISEASE CONTROL

• Risk assessment based on destination, duration, purpose of travel.
• Vaccinations: Yellow Fever (mandatory for Africa/S. America), Typhoid, Hepatitis A, Meningococcal, Japanese Encephalitis.
• Chemoprophylaxis: anti-malarials (chloroquine, mefloquine) for malaria-endemic areas.

• Travelers carry infections from endemic to non-endemic countries.
• e.g., Ebola brought from West Africa, COVID-19 spread via international travel.
• Emporiatrics enforces health declarations, vaccination certificates, quarantine.

• WHO-mandated regulations - countries must report Public Health Emergencies of International Concern (PHEIC).
• Health certificates, port health, airport medical inspection.

• "Boil it, cook it, peel it, or forget it" advice.
• Use of prophylactic antibiotics (ciprofloxacin) in high-risk travelers.

• Repellents (DEET), bed nets, protective clothing.
• Malaria chemoprophylaxis.

• Evaluate returned travelers with fever, rash, diarrhea.
• Isolation if required (e.g., Viral Hemorrhagic Fever).

• Health surveillance at Points of Entry.
• Screening for infectious diseases (e.g., thermal screening).

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Q5. Importance of Carriers in Public Health.

DEFINITION

TYPES OF CARRIERS

1. Healthy Carrier - never had the disease; e.g., meningococcal meningitis carrier.
2. Incubatory Carrier - in incubation period; e.g., cholera, measles.
3. Convalescent Carrier - recovering from disease; e.g., typhoid.
4. Chronic Carrier - carries for long periods (months/years); e.g., typhoid (Salmonella typhi), Hepatitis B.
5. Temporary Carrier - carries for a short period (<6 months).
6. Permanent Carrier - carries for life; e.g., HBsAg carriers.

IMPORTANCE IN PUBLIC HEALTH

• Carriers are the main reservoir for many diseases.
• They perpetuate the chain of infection even when no overt cases are present.

• Carriers have no symptoms, so they do not seek treatment.
• They freely move in the community, spreading infection unknowingly.
• e.g., "Typhoid Mary" - the famous chronic typhoid carrier who infected hundreds.

• Eradication is difficult because carriers are invisible.
• e.g., Poliovirus carriers in partially immunized populations.

• Determining the carrier rate helps assess the true burden of infection.
• Important in contact tracing.

• Must be screened and treated before working with vulnerable populations.
• Typhoid carriers must not handle food.

• Detection: stool/culture, serology (HBsAg).
• Treatment: antibiotics for typhoid carriers (ciprofloxacin + surgery if gallbladder focus).
• Surveillance: register and follow up.
• Health education and hygiene.
• Exclusion from sensitive occupations.

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Q6. Sanitation Barrier in the Prevention of Faecal-Borne Diseases.

CONCEPT

FAECAL-ORAL ROUTE (F-Diagram / 4 F's)

COMPONENTS OF SANITATION BARRIER

• Construction and use of latrines (pit latrines, water-seal latrines, sanitary latrines).
• Prevents contamination of soil, water, and food.
• Swachh Bharat Mission promotes ODF (Open Defecation Free) villages.

• Treated piped water supply (chlorination - 0.5 mg/L residual chlorine).
• Prevents waterborne diseases: cholera, typhoid, hepatitis A, polio.

• Proper cooking, storage, and handling.
• Hygienic food preparation prevents contamination.
• Food safety laws, inspection of food stalls.

• Washing hands with soap after defecation and before eating.
• Single most effective measure to prevent diarrheal disease (WHO).
• Global Handwashing Day: October 15.

• Flies are mechanical vectors of fecal pathogens.
• Control by: sanitary disposal of garbage, use of insecticides, screening of food.

• Proper sewage treatment prevents fecal contamination of water bodies.

DISEASES PREVENTED

• Cholera, Typhoid, Hepatitis A and E, Poliomyelitis, Amoebiasis, Giardiasis, Hookworm, Ascariasis, Dysentery.

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Q7. Influence of Bias in Research Studies.

DEFINITION

TYPES OF BIAS

• Occurs when the study sample does not represent the target population.
• Examples:
  • Berkson's Bias: hospital patients are not representative of the community.
  • Volunteer bias: volunteers are healthier than non-volunteers.
  • Loss to follow-up bias in cohort studies.
• Effect: Overestimates or underestimates the true association.

• Occurs when data collected are inaccurate.
• Recall Bias: cases remember exposure better than controls (common in case-control studies).
• Interviewer Bias: knowledge of subject's status influences data collection.
• Misclassification Bias: wrong categorization of exposure/disease status.

• A confounding variable is associated with both the exposure and the outcome.
• e.g., alcohol and lung cancer (smoking is the confounder).
• Effect: Spurious or exaggerated association.

INFLUENCE ON STUDY RESULTS

METHODS TO REDUCE BIAS

• Randomization (eliminates confounding in RCTs).
• Blinding (single, double, triple blind) - reduces information bias.
• Matching in case-control studies.
• Restriction (restrict enrollment criteria).
• Stratification in analysis.
• Multivariate analysis to control confounders.

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Q8. Ecology of Malnutrition.

DEFINITION

ECOLOGY = Web of Causation (Multiple Interacting Factors)

• Inadequate food intake - quantity and quality.
• Low calorie diet, low protein diet (kwashiorkor vs. marasmus).
• Poor dietary diversity (monotonous staple-based diet).
• Cultural food taboos (restricting eggs, meat from pregnant women/children).
• Faulty weaning practices.

• Diarrhea - nutrient loss and malabsorption.
• Measles - precipitates kwashiorkor.
• Intestinal parasites - compete for nutrients (hookworm causes iron deficiency).
• HIV/AIDS - increased metabolic demand, anorexia.
• The malnutrition-infection cycle: malnutrition → decreased immunity → more infections → more malnutrition.

• Poverty - inability to purchase adequate food.
• Illiteracy - lack of nutrition knowledge.
• Unemployment and low income.
• Large family size (more mouths to feed).
• Unequal food distribution within family (females/young children get less).

• Low crop yield, food insecurity.
• Seasonal food shortages.
• Inadequate food storage and post-harvest losses.

• Floods, droughts, famines - reduce food availability.
• Poor sanitation - promotes repeated infections.

• Inadequate antenatal care.
• Poor immunization coverage.
• Inadequate health education about nutrition.

• Rapid population growth.
• High proportion of children and women of reproductive age.

UNICEF CONCEPTUAL FRAMEWORK

• Immediate causes: Inadequate diet + disease.
• Underlying causes: Household food insecurity + inadequate care + poor water/sanitation/health services.
• Basic causes: Poverty, governance failure, political instability.

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Q9. Family Planning Services in Public Sector.

DEFINITION

SERVICES PROVIDED IN PUBLIC SECTOR (India)

1. Condoms - free supply through ANM/ASHA/PHC; Nirodh brand; 100% protection from STIs also.
2. Oral Contraceptive Pills (OCPs) - Mala-D (monthly cycle packs), Chhaya (weekly); free at PHC.
3. Emergency Contraception - Progesterone-only pill within 72 hours; Plan B/i-pill distributed.
4. Intra-Uterine Devices (IUDs)
   • Cu-T 380A (10 years), Cu-T 200B (3 years).
   • PPIUCD (Post-Partum IUD) - inserted within 48 hrs of delivery.
   • Trained ANM inserts at PHC/CHC.
5. Centchroman (Saheli) - weekly non-steroidal oral pill; non-hormonal; developed by CDRI Lucknow.
6. Injectable Contraceptives - Antara (DMPA - Depo-Provera 3 monthly) program; available at PHC.

1. Tubectomy (Female Sterilization) - Minilap, Laparoscopic; done at CHC/District Hospitals.
2. Vasectomy (Male Sterilization) - No-Scalpel Vasectomy (NSV); simple, safe, OPD procedure.
   • Promoted under National Population Policy 2000.

• Pre-procedure counseling (informed consent, voluntary choice).
• Post-procedure counseling.
• Services by ANM, Lady Health Visitor (LHV), Medical Officers.

• Mission Parivar Vikas - in 146 high fertility districts.
• RMNCH+A Strategy - integrates reproductive health.
• Compensation Scheme - financial incentives for sterilization acceptance.
• Target-Free Approach - voluntary, client-centered approach.
• ASHA-facilitated family planning - counseling, home delivery of contraceptives.

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Q10. Household Purification of Water.

NEED

METHODS OF HOUSEHOLD WATER TREATMENT

• Most effective method.
• Kills all pathogens including cysts (at 100°C).
• Effective even in turbid water (with prior settling).
• Disadvantage: Fuel cost, does not prevent recontamination; alters taste.

• Bleaching powder (calcium hypochlorite 30-33% available chlorine).
• Dose: 2.5g per 1000 L of water (for clear water).
• Residual chlorine: 0.5 mg/L after 30 minutes contact.
• Double-pot chlorination: pot with bleaching powder placed on top, drips into storage pot.
• Does not remove turbidity.

• Fill clear plastic bottles with water; expose to sunlight for 6-8 hours (1-2 days if cloudy).
• UV radiation and heat kill pathogens.
• Simple, free, effective for clear water.
• Promoted by WHO in resource-poor settings.

• Halogen tablets: chlorine (e.g., Aquatabs) or iodine.
• Easy to use, portable; useful for travelers.
• Ineffective against Cryptosporidium.

• Reverse Osmosis (RO) + UV + UF combination.
• Removes bacteria, viruses, heavy metals, dissolved solids.
• Requires electricity; expensive.

• Allow water to stand for 12-24 hours; decant clear water.
• Reduces turbidity; not sufficient alone for bacteriological safety.

• Use safe storage containers (covered, narrow-mouthed).
• Avoid putting hands in stored water.
• Regularly clean storage containers.
• WHO HWTS (Household Water Treatment & Safe Storage) guidelines.

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SHORT ANSWERS (3 marks each)

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Q11. Enlist any 3 Community Nutrition Programmes.

1. Mid-Day Meal (MDM) / PM POSHAN Scheme
   • Free cooked meal to government school children (Classes 1-8).
   • Addresses school hunger and improves enrolment.
   • Started 1995; covers >12 crore children.
2. Integrated Child Development Services (ICDS)
   • For children 0-6 years, pregnant and lactating mothers.
   • Services: supplementary nutrition, immunization, health check-up, pre-school education, referral services.
   • Delivered through Anganwadi Centers (AWCs).
3. Pradhan Mantri Matru Vandana Yojana (PMMVY)
   • Maternity benefit programme.
   • Cash incentive of Rs. 5000 in 3 installments to pregnant/lactating women.
   • Promotes birth registration, antenatal care, and institutional delivery.
   • Other options: POSHAN Abhiyaan (National Nutrition Mission), Vitamin A Supplementation Programme, Iron and Folic Acid (IFA) Supplementation.

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Q12. Mention any 3 WHO Recommended Procedures for Prevention of Air Pollution.

1. Use of Clean Fuels
   • Promote LPG, CNG, electricity instead of coal, wood, biomass.
   • WHO recommends reducing household air pollution from cooking fires.
   • Ujjwala Yojana (India) - LPG to BPL families.
2. Regulation of Industrial Emissions
   • Setting WHO Air Quality Guidelines (AQGs) - PM2.5, PM10, NO2, O3, SO2, CO.
   • 2021 WHO AQG: PM2.5 annual mean < 5 μg/m³.
   • Enforce emission standards, use scrubbers, electrostatic precipitators.
3. Promotion of Clean Transport
   • Electric vehicles (EVs), public transport, cycling, walking.
   • Reduction of vehicular emissions; BS-VI emission norms.
   • Low Emission Zones in cities.
   • Other measures: waste management (no open burning), green urban planning, EIA (Environmental Impact Assessment).

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Q13. Enumerate any 3 Health Care Delivery Indicators.

1. Doctor-Population Ratio
   • Ratio of qualified doctors to population.
   • WHO standard: 1 doctor per 1000 population.
   • India (2022): ~1:834 (including AYUSH).
   • Indicates availability of medical manpower.
2. Bed-Population Ratio / Hospital Bed Density
   • Number of hospital beds per 1000 population.
   • WHO norm: 3-5 beds per 1000.
   • Indicator of hospital infrastructure.
3. Population per PHC / Sub-Centre
   • Sub-centre norm: 1 per 5000 population (3000 in hilly areas).
   • PHC norm: 1 per 30,000 population.
   • CHC norm: 1 per 1,20,000 population.
   • Measures physical accessibility of health services.
   • Other indicators: % of deliveries by skilled birth attendant, immunization coverage, ANC coverage, bed occupancy rate.

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Q14. Mention any 3 Approaches to Health Education.

1. Individual Approach
   • One-on-one communication (e.g., physician-patient counseling, bedside teaching).
   • Most effective for behavior change as it is personalized.
   • Used in: OPD counseling, home visits by ANM/ASHA.
2. Group Approach
   • Health education to a small or large group.
   • Methods: lectures, demonstrations, group discussions, workshops, seminars.
   • e.g., Mother's meeting at Anganwadi, school health talks.
   • Advantages: reaches more people; group dynamics reinforce change.
3. Mass Approach (Media Approach)
   • Communication to large, heterogeneous populations.
   • Methods: radio, television, newspapers, posters, banners, social media.
   • e.g., Pulse Polio campaign on Doordarshan, anti-tobacco ads.
   • Advantages: wide reach, low per-person cost.
   • Limitation: one-way communication, no immediate feedback.

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Q15. Enumerate the 3 Measures of Dispersion.

1. Range
   • Difference between the maximum and minimum values.
   • Range = Maximum value - Minimum value.
   • Simple to calculate; affected by extreme values.
   • e.g., if ages are 5, 10, 15, 20, 30 - Range = 30 - 5 = 25 years.
2. Standard Deviation (SD)
   • Most widely used measure of dispersion.
   • Measures the average deviation of each value from the mean.
   • Formula: SD = √[Σ(x - x̄)²/ (n-1)]
   • In normal distribution: mean ± 1SD covers 68.27%; ±2SD = 95.45%; ±3SD = 99.73%.
   • Used to describe biological data (height, weight, BP).
3. Interquartile Range (IQR)
   • IQR = Q3 - Q1 (75th percentile minus 25th percentile).
   • Not affected by extreme values (outliers).
   • Used for skewed data or when median is the central tendency.
   • Other measures: Variance (SD²), Coefficient of Variation (CV = SD/mean × 100%).

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Q16. List any 3 Demographic Indicators.

1. Birth Rate (Crude Birth Rate - CBR)
   • Number of live births per 1000 population per year.
   • Formula: CBR = (Live births / Mid-year population) × 1000.
   • India CBR (2022): ~19.7 per 1000.
   • Indicates fertility level.
2. Death Rate (Crude Death Rate - CDR)
   • Number of deaths per 1000 population per year.
   • India CDR (2022): ~6.0 per 1000.
   • Indicates overall mortality burden.
3. Total Fertility Rate (TFR)
   • Average number of children a woman would have if she lived to the end of her reproductive life (15-49 years) at current age-specific fertility rates.
   • India TFR (2022): ~2.0 (replacement level = 2.1).
   • Best indicator of fertility trends.
   • Other indicators: Infant Mortality Rate (IMR), Maternal Mortality Ratio (MMR), Population Growth Rate, Age-Dependency Ratio, Sex Ratio.

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Q17. Mention 3 Important Responsibilities of WHO.

1. Setting Norms and Standards
   • Develops international health standards, guidelines, and recommendations.
   • e.g., IHR (International Health Regulations), WHO Essential Medicines List, AQG (Air Quality Guidelines), disease classification (ICD-11).
2. Providing Leadership on Global Health Matters
   • Leads response to health emergencies (pandemics, outbreaks).
   • e.g., COVID-19 response, Ebola response, polio eradication.
   • Declares Public Health Emergencies of International Concern (PHEIC).
   • Coordinates the Global Health Security Agenda.
3. Strengthening Health Systems
   • Technical and financial assistance to countries to develop health infrastructure.
   • Human Resources for Health; Universal Health Coverage (UHC) advocacy.
   • Health systems strengthening in LMICs (Low and Middle Income Countries).
   • Other responsibilities: Research coordination (TDR, IARC), disease surveillance (GOARN), monitoring global health trends (World Health Statistics).

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Q18. Enumerate any 3 Hazards of Bio-medical Waste.

1. Infection Hazard (Biological Hazard)
   • Sharps (needles, syringes, blades) cause needlestick injuries.
   • Transmission of HIV, Hepatitis B, Hepatitis C to health workers and waste handlers.
   • Infectious waste (soiled dressings, blood-soaked materials) spreads bacteria, viruses.
   • WHO estimates: >35 million HBV, HCV, HIV infections per year from dirty syringes.
2. Chemical and Toxic Hazard
   • Expired/discarded drugs, cytotoxic waste (chemotherapy agents) are toxic.
   • Mercury from broken thermometers/sphygmomanometers causes mercury poisoning.
   • Disinfectants (formaldehyde, phenol) are toxic and carcinogenic.
   • Chemical burns, poisoning from improper handling.
3. Environmental Pollution Hazard
   • Open burning of BMW releases dioxins, furans (carcinogenic) into the air.
   • Improper disposal contaminates soil and groundwater.
   • Radioactive waste (from nuclear medicine, radiotherapy) causes radiation exposure.
   • Genotoxic waste (cytotoxics) are mutagenic and teratogenic.
   • BMW Management Rules 2016 (India): segregation in color-coded bins (Yellow, Red, White, Blue), treatment (autoclave, incineration), and disposal.

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Q19. Mention 3 Important Fly Control Measures.

1. Environmental Sanitation / Source Reduction
   • Most effective and permanent method.
   • Proper disposal of garbage and refuse (covered bins, daily collection).
   • Sanitary disposal of human excreta (latrines, sewage treatment).
   • Compost pits must be properly covered.
   • Eliminate breeding sites: wet organic matter, dunghills, garbage dumps.
   • Clean animal sheds and stables regularly.
2. Mechanical Control
   • Fly traps, fly paper (sticky traps), wire gauze screens on windows and doors.
   • Food must be covered or stored in fly-proof containers.
   • Fly-proof meat shops and food stalls.
3. Chemical Control (Insecticides)
   • Residual spraying: DDT, malathion, pyrethroid on walls and surfaces.
   • Space sprays: pyrethrum spray for quick knockdown.
   • Larvicides: application to breeding places (garbage dumps, pit latrines) - trichlorfon.
   • Baits with insecticide (sugar bait + malathion).
   • Note: Resistance to insecticides is a growing problem; rotate compounds.

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Q20. Mention the 3 Components of AETCOM.

1. Attitude
   • Cultivation of positive professional attitudes in medical students.
   • Includes: empathy, humanism, patient-centered care, non-judgmental approach.
   • Respect for diversity (gender, religion, socioeconomic status).
   • Professional behavior: punctuality, accountability, integrity.
   • Attitude toward patients as human beings rather than "cases."
   • Learning domains: Affective domain (Bloom's taxonomy).
2. Ethics
   • Medical ethics principles: Autonomy, Beneficence, Non-maleficence, Justice (Beauchamp & Childress - Four Principles / Principlism).
   • Informed Consent: Patient's right to information and autonomous decision-making.
   • Confidentiality and privacy.
   • Truth-telling (veracity) and handling of bad news (SPIKES protocol).
   • Resource allocation, end-of-life care, organ donation ethics.
   • Research ethics: Helsinki Declaration, IRB (Institutional Review Board).
   • Legal aspects: Consumer Protection Act, MCI/NMC code of conduct.
3. Communication
   • Doctor-patient communication skills (verbal and non-verbal).
   • OSCE (Objective Structured Clinical Examination) includes communication stations.
   • Breaking bad news (SPIKES protocol: Setting, Perception, Invitation, Knowledge, Empathy, Summary).
   • Communication with colleagues, nurses, paramedics (interdisciplinary).
   • Written communication: case records, referral letters, discharge summaries.
   • Cultural sensitivity and language adaptation.
   • Health literacy: using simple language for patients.

Note: AETCOM is taught as a longitudinal module across all 4.5 years of MBBS and is not a separate subject but is integrated into every clinical posting.

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(Based on Park's Preventive & Social Medicine, 25th Ed. + Current National Programme Guidelines)

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LONG ESSAYS (10 marks each)

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Q1. Mention the Clinical Case Classification & Criteria for Clinical Diagnosis of Dengue. What are the Preventive & Control Measures?

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INTRODUCTION

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CLINICAL CASE CLASSIFICATION (WHO 2009 Revised Classification)

Category 1: DENGUE WITHOUT WARNING SIGNS

• Febrile illness for 2-7 days.
• Two or more of the following:
  • Nausea / vomiting
  • Rash (maculopapular or erythematous)
  • Aches and pains (headache, retro-orbital pain, myalgia, arthralgia)
  • Positive tourniquet test
  • Leucopenia (WBC < 5000/mm³)
• Lives in / travel to dengue-endemic area.
• Confirmed dengue or: present epidemiological link.
• Management: Outpatient, oral hydration, paracetamol, monitoring.

Category 2: DENGUE WITH WARNING SIGNS (Requires close monitoring)

• Abdominal pain or tenderness (severe)
• Persistent vomiting
• Clinical fluid accumulation (ascites, pleural effusion)
• Mucosal bleeding (gum bleeding, epistaxis)
• Lethargy / restlessness
• Liver enlargement > 2 cm
• Increase in hematocrit (≥20%) concurrent with rapid decrease in platelet count (<100,000/mm³)
• Management: IV fluids, admission, careful monitoring.

Category 3: SEVERE DENGUE (Life-threatening)

• Severe plasma leakage leading to: dengue shock syndrome (DSS), fluid accumulation with respiratory distress.
• Severe bleeding as evaluated by clinician.
• Severe organ impairment:
  • Liver: AST/ALT ≥ 1000 IU/L
  • CNS: impaired consciousness
  • Heart: myocarditis, cardiomyopathy
  • Kidneys: acute renal failure
  • Management: Intensive care, aggressive fluid management, blood/platelet transfusion if indicated.

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OLDER WHO 1997 CLASSIFICATION (still asked in exams):

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CRITERIA FOR CLINICAL DIAGNOSIS OF DENGUE

Clinical Criteria:

1. Acute febrile illness of 2-7 days duration.
2. Retro-orbital headache, severe bodyache ("bone-breaking fever" / "breakbone fever").
3. Flushing of face.
4. Maculopapular rash (appears on day 3-5 of fever; "islands of white in a sea of red").
5. Minor hemorrhagic manifestations: petechiae, purpura, epistaxis.
6. Leucopenia, thrombocytopenia.

Tourniquet Test (Rumple-Leede Test):

• Inflate BP cuff to midpoint between systolic and diastolic for 5 minutes.
• Positive if ≥ 20 petechiae per 25 cm² (1 square inch) area.
• Simple, cheap bedside test.

Laboratory Criteria:

Case Definitions:

• Suspected case: Acute febrile illness + 2 symptoms + travel/residence in dengue-endemic area.
• Probable case: Suspected case + positive dengue NS1 or IgM.
• Confirmed case: Suspected case + dengue isolation / PCR / fourfold rise in IgG titre.

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PREVENTIVE AND CONTROL MEASURES

A. VECTOR CONTROL (Main pillar)

• Empty, clean, or cover all water storage containers weekly.
• Invert all containers when not in use.
• Change water in coolers, bird baths, flower vases every 5-7 days.
• Abolish breeding sites: check tyres, construction sites, clogged gutters.

• Gambusia affinis (mosquito fish) - eats larvae in ponds.
• Bacillus thuringiensis israelensis (Bti) - biological larvicide in large containers.
• Mesocyclops (copepods) - biological control agents.

• Temephos (Abate) - 1 ppm in drinking water containers (WHO-approved, safe).
• Pyrethroid insecticides in small containers.

• Space spraying (fogging): Malathion, pyrethroid (deltamethrin) fog/mist during epidemics.
• Indoor residual spraying.
• Limitation: Aedes are day-biting, so spraying must be done during day.

• Full-sleeved clothing, long pants during day.
• Mosquito repellents (DEET, picaridin, oil of lemon eucalyptus).
• Insecticide-treated clothing.
• Screens on windows and doors.
• Use of mosquito nets (day naps especially for infants, elderly).

B. VACCINE

• CYD-TDV (Dengvaxia® - Sanofi Pasteur): First licensed dengue vaccine.
  • Tetravalent, live attenuated, chimeric vaccine.
  • Approved in dengue-endemic countries for persons 9-45 years (seropositive).
  • NOT recommended for dengue-naive individuals (risk of severe dengue in primary infection post-vaccination).
  • TAK-003 (Qdenga® - Takeda): Approved in Europe (2022); tetravalent; can be given irrespective of serostatus.

C. CASE MANAGEMENT

• Early diagnosis and treatment (ORS, paracetamol for fever - NO aspirin/NSAIDs/steroids).
• Warning signs monitoring.
• Dengue with warning signs - IV crystalloids (Ringer's Lactate / Normal Saline).
• Severe dengue - ICU care, fluid resuscitation.
• Platelet transfusion only if < 10,000/mm³ or active bleeding.

D. SURVEILLANCE

• Integrated Disease Surveillance Programme (IDSP): Weekly reporting of dengue cases.
• Sentinel surveillance at district and state level.
• Entomological surveillance: Breteau Index (BI), House Index (HI), Container Index (CI).
  • BI > 50 = dengue epidemic threshold.

E. HEALTH EDUCATION

• IEC campaigns: media, ASHA workers, schools.
• "Dry Day" campaign: clean water storage containers once a week.
• Community participation: public cleanup drives.

F. INTERNATIONAL MEASURES

• Notification to WHO under IHR 2005.
• Airport health measures for travelers from endemic areas.

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Q2. Explain how the NP-NCD Programme is Implemented at the PHC Level. Describe the Newer Initiatives under NP-NCD.

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INTRODUCTION

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OBJECTIVES OF NP-NCD

1. Prevent and control NCDs (cancer, diabetes, CVD, stroke, hypertension, obesity, COPD, CKD).
2. Provide early diagnosis and management at PHC level.
3. Strengthen infrastructure, human resources, and health promotion for NCD prevention.
4. Build capacity at all levels of health system.

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IMPLEMENTATION AT PHC LEVEL

A. Population-Based NCD Screening (CBS - Community-Based Screening)

• All individuals ≥ 30 years of age (revised from ≥ 40 years).
• Screening done at Sub-centres, HWCs (Health and Wellness Centres), PHCs.

1. Hypertension - BP measurement.
2. Diabetes - Fasting blood glucose/GRBS.
3. Three Common Cancers:
   • Oral cancer - examination of oral cavity.
   • Cervical cancer - Visual Inspection with Acetic Acid (VIA).
   • Breast cancer - Clinical Breast Examination (CBE).

B. Health and Wellness Centres (HWCs) - Primary Platforms

• Community Health Officer (CHO) / ANM conducts screening.
• Health promotion activities.
• First point of contact for NCD management.

• Medical Officer manages newly diagnosed patients.
• Basic investigations: blood glucose, BP, lipid profile, ECG.
• Provides standard treatment protocols.
• Drugs dispensed free of charge (anti-hypertensives, anti-diabetic, statins).

C. Standard Treatment Protocols at PHC

• Amlodipine 5 mg (first-line), Atenolol, Enalapril.
• Follow-up every 1-3 months.
• Lifestyle counseling: DASH diet, salt restriction (< 5g/day), exercise.

• Metformin (first-line), Glipizide, Insulin (if required).
• HbA1c monitoring.
• Foot care, eye examination referral.

• Suspect cases referred to District NCD Clinic / cancer centres.
• VIA positive → Cryotherapy at PHC level (if trained staff available).

D. Human Resources at PHC

E. Drug Availability

• Free Essential NCD Drugs under PM-AB HWC package:
  • Antihypertensives, Metformin, Statins (Atorvastatin), Aspirin, Levothyroxine.
  • Available through Jan Aushadhi Kendras and PHC dispensary.

F. Referral Pathway

• Sub-centre → PHC: Suspected/newly diagnosed NCD patients.
• PHC → CHC/DH: Complications, poorly controlled cases, suspected cancers.
• CHC/DH → Medical College: Severe complications, oncology cases.
• Back-referral / Reverse referral: Post-treatment follow-up at PHC.

G. IEC Activities at PHC Level

• NCD health camps (quarterly).
• Yoga days (International Yoga Day, June 21).
• School health education.
• Village health and nutrition days.

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NEWER INITIATIVES UNDER NP-NCD

1. National NCD Mission (2023)

• Umbrella programme encompassing NPCDCS + all NCD programmes.
• Six priority disease groups: CVD, diabetes, cancers, COPD/asthma, mental disorders, injuries.
• Population-based approach from community to tertiary level.

2. Expanded Screening (30+ years)

• Earlier screening target was ≥ 40 years; now changed to ≥ 30 years to catch early-onset diabetes and hypertension.

3. Digital Health Integration

• e-Sanjeevani / NCD IT Application: Mobile-based app for recording CBS data.
• Ayushman Bharat Digital Mission (ABDM): Health ID-linked NCD records.
• Telemedicine for follow-up in remote areas.

4. Inclusion of COPD and CKD Screening

• Chronic Kidney Disease (CKD) screening added: urine albumin-creatinine ratio, serum creatinine.
• COPD screening: spirometry at PHC level.

5. Expansion of Cancer Screening

• Three cancers expanded to include colorectal, lung, prostate in high-risk groups.
• HPV testing for cervical cancer (replacing VIA at higher levels).
• HPV vaccine (Gardasil, Cervavac - Made in India) for girls 9-14 years under Universal Immunization Programme.

6. PM-Abhim (Pradhan Mantri Ayushman Bharat Health Infrastructure Mission)

• Strengthens PHC and CHC infrastructure for NCD management.
• Critical Care Blocks at district hospitals.
• NCD clinics at every district hospital.

7. India Hypertension Control Initiative (IHCI)

• Launched 2017; expanded to all districts by 2022.
• Simple treatment protocol (Amlodipine + Losartan + Chlorthalidone).
• Pharmacy-linked tracking system.
• Target: 80% BP control among hypertensives by 2025.

8. 100-Day Agenda for NCD

• 2023 MoHFW initiative: 1 crore NCD screenings per month at HWCs.

9. NCD Cancer Cervix Elimination Programme

• Aligned with WHO global strategy to eliminate cervical cancer (< 4 per 100,000 by 2030).
• 90-70-90 targets: 90% vaccinated, 70% screened, 90% treated.

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SHORT ESSAYS (5 marks each)

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Q3. Define Disaster Mitigation. Describe the Measures for Disaster Mitigation at the Community Level.

DEFINITION

DISASTER MANAGEMENT CYCLE

TYPES OF MITIGATION

• Physical measures to reduce disaster impact.
• e.g., flood embankments, earthquake-proof buildings, seawalls.

• Policies, laws, awareness, training measures.
• e.g., land-use zoning, early warning systems, community training.

MEASURES FOR DISASTER MITIGATION AT COMMUNITY LEVEL

• Identify hazards (floods, earthquakes, cyclones) in the local area.
• Map vulnerable populations: elderly, disabled, children, BPL families.
• Prioritize mitigation actions based on risk level.

• Install community-based flood gauges, cyclone warning sirens.
• Community volunteers trained to disseminate warnings.
• NDMA (National Disaster Management Authority) alert systems linked to local panchayat.

• Village Disaster Management Plan (VDMP) - created with panchayat.
• Identifies: escape routes, safe shelters, assembly points.
• Mock drills and simulation exercises (at least twice a year).

• Train community volunteers in: First Aid, Search and Rescue (SAR), Fire safety.
• NDMA programs: "Aapda Mitra" - 1 lakh trained community volunteers.
• CERT (Community Emergency Response Teams).

• Enforce earthquake-resistant construction codes (BIS standards).
• Restrict settlement in flood plains, landslide-prone, coastal zones.
• Retrofit existing vulnerable buildings.

• Strategic reserves of food, water, medicines at community level.
• Pre-positioned emergency supplies (non-perishable food, ORS, blankets, tents).

• Crop insurance (Pradhan Mantri Fasal Bima Yojana) - protects farmers from flood/drought losses.
• Diversification of livelihoods to reduce economic vulnerability.

• Afforestation and mangrove plantation (reduces cyclone/flood impact).
• Wetland conservation (natural flood buffers).
• Watershed management to prevent flash floods.

• Stock emergency medicines (ORS, antibiotics, antidotes).
• Train PHC staff in mass casualty management.
• Establish patient surge capacity protocols.
• Pre-position blood banks and mobile medical units.

• Door-to-door education about disaster preparedness.
• School safety programs: earthquake/fire drills.
• Panchayat-level awareness campaigns.
• Nukkad Nataks (street plays) in disaster-prone areas.

• NDMA at national level.
• SDMA (State Disaster Management Authority) at state level.
• DDMA (District DMA) at district level.
• Community-level: Village Disaster Management Committee (VDMC) - headed by Gram Pradhan.

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Q4. Describe the 6×6×6 Strategy of Anemia Mukt Bharat.

INTRODUCTION

THE 6×6×6 FRAMEWORK

FIRST 6: SIX TARGET BENEFICIARY GROUPS

1. Children 6-59 months
2. Children 5-9 years (school-age)
3. Adolescent girls (10-19 years)
4. Adolescent boys (10-19 years) - NEW ADDITION (previously not targeted)
5. Pregnant women
6. Lactating women (up to 6 months post-delivery)

SECOND 6: SIX INTERVENTIONS (Prophylaxis and Treatment)

• Single dose Albendazole 400 mg (200 mg for 1-2 yrs) under National Deworming Day (NDD, Feb 10 & Aug 10).
• All target age groups 1-19 years.
• Eliminates hookworm and other soil-transmitted helminths that cause blood loss.

• ASHA/AWW/ANM motivate compliance with IFA tablets.
• Messages: consume IFA with lemon juice (Vitamin C enhances absorption), avoid with tea/milk/coffee.
• SBCC (Social Behaviour Change Communication): wall paintings, IEC, radio.

• Promote consumption of: green leafy vegetables, jaggery, meat, eggs, fish.
• POSHAN calendar and seasonal food-based approaches.
• Fortification: rice fortification under Pradhan Mantri Poshan Shakti Nirman.

• Malaria control - AMB links with National Vector Borne Disease Control Programme (NVBDCP).
• Hemoglobinopathies - screening for sickle cell disease, thalassemia.
• Fluorosis management.
• Management of chronic diseases contributing to anemia.

• Point-of-care Hb testing at PHC/sub-centre/HWC using portable hemoglobinometer.
• Grading of anemia: Mild (Hb 10-11.9 g/dL), Moderate (7-9.9 g/dL), Severe (<7 g/dL).
• Immediate treatment and referral for severe cases.

THIRD 6: SIX INSTITUTIONAL MECHANISMS FOR DELIVERY

1. Health platform (PHC/HWC/Sub-centre): ANM delivers IFA tablets; monitors Hb levels.
2. ICDS platform (Anganwadi Centre): AWW distributes IFA drops for 6-59 months children.
3. School platform (WIFS): Weekly Iron and Folic Acid Supplementation through teachers.
4. Community platform (ASHA): Home delivery of IFA tablets; tracks compliance.
5. Digital platform (MCP Card, Mother and Child Tracking System - MCTS/RCH portal): Records and tracks beneficiaries.
6. Industry/Medical college platform: Private sector partnerships; social marketing of IFA.

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Q5. Define Healthy Ageing and Describe the Actions Towards Healthy Ageing.

DEFINITION

"Healthy ageing is the process of developing and maintaining the functional ability that enables well-being in older age."

UN DECADE OF HEALTHY AGEING (2021-2030)

ACTIONS TOWARDS HEALTHY AGEING

A. Individual Level Actions

1. Regular Physical Activity
   • 150 min/week moderate intensity or 75 min vigorous activity.
   • Prevents sarcopenia, obesity, diabetes, depression, falls.
   • Balance and strength training (Tai chi, yoga).
2. Healthy Diet
   • Adequate protein (1-1.2 g/kg body weight for elderly).
   • Calcium (1200 mg/day) and Vitamin D (800-1000 IU/day) - prevent osteoporosis.
   • Limit salt, sugar, saturated fats.
   • Hydration: 2-3 litres/day.
3. Cognitive Engagement
   • Mental exercises: reading, puzzles, music, social interaction.
   • Lifelong learning to prevent dementia/Alzheimer's.
4. Social Participation
   • Prevent social isolation - community groups, religious activity, family engagement.
   • Elder Self-Help Groups (SHGs).
5. Avoidance of Tobacco and Alcohol
6. Regular Health Screenings
   • BP, blood glucose, lipids, eye, ear, dental check-ups.
   • Bone density (DEXA scan) for osteoporosis.

B. Health System Actions

1. Geriatric Clinics at PHC/CHC Level
   • Special OPD for elderly (Mondays/Wednesdays).
   • Free drugs for chronic diseases.
2. Rashtriya Vayoshri Yojana
   • Provides assistive devices (spectacles, hearing aids, walking sticks, wheelchairs) free to BPL elderly.
3. National Programme for Healthcare of the Elderly (NPHCE)
   • Dedicated geriatric wards at district hospitals.
   • Regional Geriatric Centres at medical colleges.
   • Home-based care for bedridden elderly.
   • Launched 2010.
4. Immunization
   • Influenza vaccine (annually).
   • Pneumococcal vaccine (PCV-13/PPSV-23).
   • Shingles (Zoster) vaccine.
   • Tetanus booster.
5. Fall Prevention
   • Home hazard assessment by health visitors.
   • Grab bars, non-slip mats, adequate lighting.
   • Exercise programs to improve balance.
6. Mental Health Care
   • Screening for depression, dementia under DMHP (District Mental Health Programme).
   • Geriatric psychiatry services.

C. Community and Policy Level Actions

1. Age-Friendly Environments (WHO Age-Friendly Cities)
   • Ramps, elevators, accessible public transport.
   • Senior citizen parks, recreational spaces.
2. Elder Abuse Prevention
   • Maintenance and Welfare of Parents and Senior Citizens Act, 2007.
   • Helpline 14567 (Elder Line by MoSJE).
3. Social Security
   • Indira Gandhi National Old Age Pension Scheme (IGNOAPS).
   • Senior Citizen Savings Scheme (SCSS).
4. Intergenerational Programmes
   • Link young and old through community programs.

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Q6. Describe the Objectives, Components, and Activities of the District Mental Health Programme (DMHP).

BACKGROUND

OBJECTIVES

1. Ensure availability and accessibility of minimum mental health care for all in the foreseeable future.
2. Encourage application of mental health knowledge in general health care and in social development.
3. Promote community participation in mental health service delivery.
4. Reduce stigma associated with mental illness.
5. Integration of mental health with general health services at district level.
6. Early detection and treatment of mental illnesses at peripheral level.

COMPONENTS OF DMHP

• Training of health professionals (MOs, ANMs, nurses) at PHC/CHC in basic mental health.
• Training of non-medical community volunteers (ASHA, teachers, police).
• NIMHANS/IHBAS provide training support.
• Master trainers → cascade training.

• OPD mental health services at district hospital.
• In-patient services (10-bed psychiatry ward at district hospital).
• Emergency psychiatric services.
• De-addiction services.
• Mental health OPD at CHC and PHC (monthly visits by psychiatrist/MO).
• Mobile Mental Health Units (MMHUs) for rural outreach.

• Anti-stigma campaigns.
• Mental health awareness drives (World Mental Health Day - Oct 10).
• Community education about common mental disorders.
• Street plays, radio programs, poster campaigns.

• Case registers at PHC level.
• District Mental Health Register.
• Reporting to state and central level.
• Supervision by District Nodal Officer.

• Half-way homes, day care centers, sheltered workshops.
• Social welfare linkage for disabled.

ACTIVITIES UNDER DMHP

• MO trained to diagnose and treat common mental disorders (depression, anxiety, psychosis, epilepsy).
• Schizophrenia: Trifluoperazine/Haloperidol.
• Depression: Amitriptyline, Fluoxetine.
• Epilepsy: Phenobarbitone, Phenytoin.
• ANM/ASHA: detect cases, ensure drug compliance, follow-up.

• Visiting psychiatrist or trained MO.
• OPD once or twice monthly.
• Refer severe cases to district hospital.

• Full-time psychiatrist, psychologist, social worker, psychiatric nurse.
• 10+ bed psychiatry ward.
• Forensic psychiatry.
• Child & adolescent mental health clinics.

• MANAS Programme - digital mental health platform.
• iCall - counseling helpline.
• Vandrevala Foundation Helpline (24×7): 1860-2662-345.
• iCare - suicide prevention.
• Manodarpan initiative under NEP 2020 - student mental health.
• KIRAN helpline (1800-599-0019): 24×7 free mental health rehabilitation helpline launched during COVID-19.

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Q7. Define Emerging Infectious Diseases and Describe the Factors Responsible for Their Emergence.

DEFINITION

"Infections that have newly appeared in a population, or have existed but are rapidly increasing in incidence or geographic range."

• Morse (1995)

NOTABLE EXAMPLES OF EIDs

FACTORS RESPONSIBLE FOR EMERGENCE

• Deforestation brings humans in contact with previously isolated animal reservoirs (zoonoses).
• Dam construction, irrigation changes vector habitats.
• e.g., Hendra virus (fruit bats displaced by deforestation in Australia).
• Climate change expands range of vectors: Aedes aegypti now found at higher altitudes.

• Rapid urbanization creates overcrowded slums - ideal for airborne/waterborne disease spread.
• Population growth - more humans in contact with animal reservoirs.
• Sexual behaviour changes - STI spread (HIV).
• IV drug use - HIV, Hepatitis C.

• Air travel allows rapid global spread of infections.
• A pathogen can travel from remote forest to any global city in 24 hours.
• e.g., COVID-19 spread from Wuhan to 185 countries in weeks.
• Import of exotic animals/pets: Mpox (prairie dogs in USA, 2003).

• Large-scale food processing: single contamination event causes multinational outbreaks.
• e.g., Listeria in deli meats, E. coli O157:H7 in hamburgers.
• Blood/organ products: HIV, Hepatitis B, C.
• Air conditioning cooling towers: Legionella (Legionnaire's disease).

• Mutation, recombination, reassortment of pathogens to:
  • Develop antibiotic resistance (MRSA, MDR-TB, XDR-TB).
  • Evade immune responses.
  • Acquire new host range.
• e.g., Influenza antigenic shift → pandemic strains.
• SARS-CoV-2 variants: Alpha, Delta, Omicron.

• Deteriorating sanitation/water supply in conflict zones.
• Incomplete immunization - resurgence of measles, polio.
• Drug resistance due to misuse of antibiotics.
• Neglect of vector control programs.

• ~75% of all EIDs are zoonoses (WHO).
• Wildlife is a major reservoir: bats (Ebola, SARS, COVID, Nipah), rodents (Hantavirus), monkeys (Mpox).
• Wet markets, bushmeat hunting, exotic pet trade facilitate spillover.

• Displacement of populations.
• Breakdown of health infrastructure.
• Poor nutrition, overcrowding in refugee camps.
• e.g., cholera in Yemen, typhoid in Syria.

• Poor access to healthcare delays detection and response.
• Malnutrition reduces host immunity.
• Unsafe water/sanitation perpetuates enteric infections.

• Rising temperatures expand range of Plasmodium, Aedes.
• Floods spread waterborne diseases; droughts increase vector density.
• Melting permafrost may release ancient pathogens.

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Q8. Describe the Newer Initiatives in the Treatment of Tuberculosis under NTEP.

INTRODUCTION

NEWER INITIATIVES IN TREATMENT UNDER NTEP

1. Daily Fixed Dose Combination (FDC) Regimens

• Replaced thrice-weekly DOT with daily treatment regimens.
• FDC tablets: 4-drug (HRZE) and 2-drug (HR) in fixed doses.
• Reduces missed doses, pill burden, drug resistance.
• Treatment: 2 months intensive phase (HRZE) + 4 months continuation phase (HR) = 6 months.

2. Nikshay Poshan Yojana (NPY)

• Direct Benefit Transfer (DBT) of Rs. 500/month to all TB patients for nutritional support.
• Transferred directly to patient's Aadhaar-linked bank account.
• Rationale: malnutrition is the biggest risk factor for TB in India (29% of TB attributable to undernutrition).

3. Nikshay Mitra Initiative (2022)

• Community Support / Adoption of TB patients.
• Individuals, organizations, corporates, elected representatives adopt TB patients.
• Provide nutritional kits, vocational support, emotional support.
• Targets adoption of 95 lakh TB patients.

4. Ni-kshay Digital Platform

• IT platform for real-time tracking of TB patients.
• Patient registration, drug distribution tracking, outcome recording.
• Links with ABHA (Ayushman Bharat Health Account).
• Nikshay app for healthcare providers.

5. Bedaquiline and Delamanid for DR-TB

• Bedaquiline (BDQ): First new TB drug in 50 years (Diarylquinoline class); approved by India in 2018.
  • For MDR-TB, Pre-XDR-TB.
  • Inhibits ATP synthase of Mycobacterium tuberculosis.
• Delamanid: Nitroimidazole; inhibits mycolic acid synthesis.
  • Used in XDR-TB.
• Both included in shorter MDR-TB regimens.

6. Shorter MDR-TB Treatment Regimens

• BPaL regimen (Bedaquiline + Pretomanid + Linezolid) - 6 months for XDR-TB (TB-PRACTECAL trial).
• BPaLC regimen under ZeNix trial.
• WHO 2022 consolidated guidelines: BPaL(M) - 6-9 months for treatment-resistant TB.
• India adopting shorter 6-month BPaL regimen for XDR-TB.

7. Molecular Diagnostic Tests

• CBNAAT (Cartridge-Based Nucleic Acid Amplification Test / GeneXpert MTB/RIF): Rapid detection of TB + Rifampicin resistance in 2 hours. Provided at DMCs.
• TrueNat: Indian-made point-of-care PCR device; more suitable for rural settings.
• Line Probe Assay (LPA): Rapid DST for Isoniazid and Rifampicin. Used in IRL (Intermediate Reference Laboratories).
• Whole Genome Sequencing (WGS): For comprehensive resistance profiling - being piloted.

8. Active Case Finding (ACF)

• Door-to-door screening in high-risk areas.
• Mobile X-ray vans (AI-based CXR interpretation - CAD4TB, qXR).
• Household contact investigation.
• Targeted screening: prisoners, healthcare workers, diabetics, PLHIV.

9. TB Preventive Therapy (TPT)

• 6H (6 months Isoniazid) or 3HP (3 months weekly Isoniazid + Rifapentine) for latent TB.
• Mandated for: PLHIV, household contacts < 5 years of smear-positive TB patients, immunocompromised.
• Target: 90% of eligible household contacts on TPT by 2025.

10. Universal Drug Susceptibility Testing (UDST)

• DST for all newly diagnosed TB patients (Line probe assay / GeneXpert).
• Ensures appropriate regimen from Day 1.

11. TB-Free India Campaign ("PM TB Mukt Bharat Abhiyan")

• Launched by PM in 2022.
• Community and political engagement for TB elimination.
• Gram Panchayat TB surveillance.

12. Nutritional Supplementation

• CSIR Aahar Kranti programme provides nutritional support.
• Research on vitamin D supplementation in TB.

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Q9. Classify the Types of ICTCs and Briefly Describe Their Functions.

INTRODUCTION

• Client-initiated (CITC): Person approaches on their own.
• Provider-initiated (PITC): Referred by a healthcare provider.

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CLASSIFICATION OF ICTCs

1. Standalone ICTCs (SA-ICTC)

• HIV pre-test and post-test counselling.
• HIV testing using 3-test serial algorithm (3 rapid tests).
• Diagnosis of HIV positive individuals.
• Referral to ART centre for treatment.
• Linkage to PPTCT (Prevention of Parent-to-Child Transmission) services.
• TB/HIV collaborative activities.
• Sentinel surveillance.
• STI/RTI counselling.

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2. Facility-Integrated ICTCs (F-ICTC)

• Provider-initiated testing (PITC) - especially for pregnant women, TB patients, STI patients.
• Designed for scale-up and sustainability.
• Linked with PPTCT programme for ANC screening.

• All pregnant women attending ANC are offered HIV testing as part of routine care.
• HIV testing of TB patients (TB-HIV co-infection management).
• Referral of positives to SA-ICTC or ART centres.
• Basic counselling by trained ANM/nurse.

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3. Mobile ICTCs (M-ICTC) / Outreach ICTCs

• Truckers, migrants, tribal populations, prisoners.
• Areas without fixed health facilities.

• Vehicle-based: van with counselling area + rapid test facility.
• Operated by NGOs/SACS (State AIDS Control Society) with NACO support.
• Visits scheduled weekly/fortnightly to specific locations.

• Outreach HIV testing.
• Linkage to fixed facilities for ART.
• STI screening and treatment.
• Condom distribution.
• Community awareness on HIV prevention.

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COMMON FUNCTIONS OF ALL ICTCs

1. Pre-test Counselling:
   • Explain HIV, transmission routes, significance of test.
   • Risk assessment.
   • Obtain informed consent.
2. HIV Testing:
   • 3-test serial algorithm:
     • Test 1 (T1 - most sensitive): e.g., Combaids RST.
     • If reactive → Test 2 (T2): e.g., HIV Tri-dot.
     • If reactive → Test 3 (T3): e.g., Kapeelab.
     • 3 positives = HIV Positive diagnosis.
3. Post-test Counselling:
   • If negative: window period, risk reduction, next testing.
   • If positive: coping, disclosure, treatment linkage.
4. Linkage to ART:
   • Same-day ART initiation if positive (Test and Treat policy under NACP-V).
5. PPTCT Services:
   • All ANC women tested.
   • Positive women: ART initiated immediately.
   • Post-delivery: infant prophylaxis (Nevirapine).
6. Confidentiality: All information strictly confidential.

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Q10. Describe the Management Methods Based on Behavioural Sciences.

INTRODUCTION

• Designing effective health programs.
• Managing health workers and organizations.
• Facilitating behaviour change in communities.

MANAGEMENT METHODS BASED ON BEHAVIOURAL SCIENCES

1. Theory X and Theory Y (Douglas McGregor, 1960)

• Workers are inherently lazy, avoid work.
• Need to be controlled, directed, threatened.
• Management style: autocratic, micromanagement.
• Applicable in routine, low-skill work.

• Workers are self-directed, creative, willing to accept responsibility.
• Job satisfaction is motivating.
• Management style: participative, democratic.
• More applicable in professional health settings (doctors, nurses, PHC staff).

2. Maslow's Hierarchy of Needs (Abraham Maslow, 1943)

Self-actualization (professional growth, research)
  ↑
Esteem needs (recognition, awards, promotion)
  ↑
Love/Belonging (team work, collegial relationships)
  ↑
Safety needs (job security, safe work environment)
  ↑
Physiological needs (salary, housing, food)

• PHC management must first ensure adequate salaries (physiological), job security (safety), before expecting self-actualization.

3. Herzberg's Two-Factor Theory (Motivation-Hygiene Theory)

• Salary, working conditions, supervision, policies, job security.
• Their absence causes dissatisfaction but their presence does NOT motivate.

• Achievement, recognition, responsibility, growth, the work itself.
• These must be actively provided to motivate health workers.

4. Behavioural Change Communication (BCC) / Social Behaviour Change Communication (SBCC)

• KAP (Knowledge-Attitude-Practice): Change knowledge → change attitude → change practice.
• Health Belief Model (HBM): People change behaviour when they perceive susceptibility, severity, benefits of action, and self-efficacy.
• Stages of Change Model (Transtheoretical Model - Prochaska): Pre-contemplation → Contemplation → Preparation → Action → Maintenance.
• Social Learning Theory (Bandura): Behaviour modelled after role models; self-efficacy.

• Interpersonal: one-on-one counseling, group discussion.
• Mass media: TV, radio, social media.
• Community: nukkad nataks, folk media.

5. Leadership Styles in Health Management

6. Group Dynamics and Team Building

• Tuckman's stages: Forming → Storming → Norming → Performing → Adjourning.
• Health teams (MO, ANM, ASHA) must be managed through these stages.
• Team meetings, huddles, case conferences improve performance.

7. Conflict Management

• Thomas-Kilmann Model: 5 modes: Competing, Collaborating, Compromising, Avoiding, Accommodating.
• Collaboration is ideal in health team conflicts.
• Mediation, grievance mechanisms in hospitals.

8. Performance Management

• MBO (Management by Objectives) - goal-setting with mutual agreement.
• Balanced Scorecard - measures financial, customer, internal process, learning/growth.
• 360° Appraisal - feedback from peers, subordinates, supervisors.

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SHORT ANSWERS (3 marks each)

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Q11. Acculturation

1. Integration: Maintains own culture AND adopts host culture. (Most adaptive)
2. Assimilation: Abandons own culture; adopts host culture.
3. Separation: Maintains own culture; rejects host culture.
4. Marginalization: Loses both cultures. (Most maladaptive; causes acculturative stress)

• Dietary acculturation: migrants adopting Western diets → increased obesity, diabetes, CVD.
• "Healthy migrant effect": Initially healthy migrants deteriorate over time as they acculturate.
• Mental health: acculturative stress, identity conflicts.
• Abandonment of traditional health practices (both beneficial and harmful).
• Language barrier → reduced healthcare access.

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Q12. Catastrophic Health Expenditure (CHE)

• NFHS-4: ~4.7% of households experienced CHE.
• India's OOP expenditure as % of total health spending: ~47% (among the highest in the world).
• India's Public health spending: ~1.35% of GDP (low compared to 3-5% recommended).

• Hospitalization costs (surgeon fees, medicines, diagnostics).
• Chronic disease long-term medications.
• Cancer treatment.
• Informal payments (corruption).
• Unregulated private sector pricing.

• Impoverishment: Pushes ~55 million people into poverty annually in India (WHO/World Bank estimate).
• Catastrophic spending leads to distress sale of assets, food insecurity.

1. Ayushman Bharat - PM-JAY: Rs. 5 lakh/year health insurance to BPL families (secondary/tertiary hospitalization).
2. Pradhan Mantri Bhartiya Janaushadhi Pariyojana: Generic medicines at 50-90% lower cost.
3. Free Diagnostics and Drug Services at public facilities.
4. Mukhyamantri Arogya schemes (state-level).
5. Strengthening primary care to prevent hospitalizations.

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Q13. PERT (Programme Evaluation and Review Technique)

• Uses a network diagram (arrows and nodes) to depict sequence of activities.
• Each activity has three time estimates:
  • Optimistic time (to): Minimum time if all goes well.
  • Most likely time (tm): Under normal conditions.
  • Pessimistic time (tp): Maximum time if everything goes wrong.
• Expected time (te) = (to + 4tm + tp) / 6 (weighted average - Beta distribution).

1. Identify all activities.
2. Establish sequence/dependencies.
3. Draw network diagram.
4. Estimate times (to, tm, tp).
5. Calculate te and critical path.
6. Monitor and update.

• Planning large health programs (polio campaigns, hospital construction).
• Monitoring pulse polio logistics.
• Health education campaign planning.
• Hospital project management.

• PERT: probabilistic (3 time estimates) - used for research/uncertain projects.
• CPM: deterministic (single time estimate) - used for routine construction projects.

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Q14. NITI Aayog

• Full-time members (specialists)
• Part-time members
• Ex-officio members (Cabinet ministers)
• Governing council (CMs of all states + LG of UTs) - ensures cooperative federalism.

1. Health Index - annual ranking of states on health outcomes (annually since 2017).
2. Sustainable Development Goals (SDG) mapping and India-VNR report.
3. Ayushman Bharat policy design and monitoring.
4. National Nutrition Strategy.
5. Three-year action plans and 15-year vision document (India @75 and India @100).
6. District Hospital Strengthening programme.
7. School Education Quality Index (SEQI) and Water Management Index.

• "India @75" - Vision document.
• "Healthy States, Progressive India" - Health Index.
• "Strategy for New India @75" - 3-year action agenda.

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Q15. Combating Counterfeit Medicines

• Treatment failure: patient does not recover.
• Drug resistance (sub-therapeutic doses of antibiotics → AMR).
• Adverse reactions from unknown toxic ingredients.
• Death from toxic excipients (e.g., DEG - diethylene glycol in paracetamol syrup).

• Drugs and Cosmetics Act 1940 (amended 2008): Criminal penalties for manufacturing/selling spurious drugs (imprisonment + fine).
• CDSCO (Central Drugs Standard Control Organisation): Drug regulator; market surveillance.
• State Drug Controllers: Inspect pharmacies, manufacturers, collect samples for testing.
• Track and Trace System (BarCode/RFID): Mandatory pack-level track and trace for scheduled drugs.

• WHO Prequalification Programme for medicines.
• WHO GMP (Good Manufacturing Practices) certification.
• NABL-accredited testing labs.

• QR codes / Holograms on medicine packaging (e.g., 2D matrix on prescription drugs).
• mPedigree Network - mobile verification (SMS to verify authenticity).
• TraceLink / Serialization of drug supply chains.

• INTERPOL Operation Pangea - annual global operation against online sale of counterfeit medicines.
• IMPACT (International Medical Products Anti-Counterfeiting Taskforce) - WHO-led.
• Falsified Medical Products Treaty (Medicrime Convention) - Council of Europe.

• Educate patients to buy from licensed pharmacies.
• Avoid unverified online pharmacies.
• Report suspected counterfeits.

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Q16. World Health Day 2026 Theme

"Together for Health. Stand with Science."

• Celebrates the power of scientific collaboration to protect the health of people, animals, plants, and the planet.
• Emphasizes the One Health approach - health of humans, animals, and the environment are interconnected.
• Calls on governments, scientists, health workers, and the public to stand with science.

• International One Health Summit (hosted by France under French G7 Presidency).
• Inaugural Global Forum of WHO Collaborating Centres - bringing together ~800 scientific institutions from 80+ countries.

• 2025: "Healthy Beginnings, Hopeful Futures" (maternal and newborn health)
• 2024: "My Health, My Right"
• 2023: "Health for All"
• 2022: "Our Planet, Our Health"

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Q17. Syndromic Case Management of RTI/STI

DEFINITION

RATIONALE

• Laboratory diagnosis (culture, serology) is expensive, time-consuming, and unavailable at PHC.
• Many STIs are asymptomatic or co-infections exist.
• Early treatment prevents complications and reduces transmission.

SYNDROMES AND TREATMENT

ADVANTAGES

• Rapid treatment at first contact.
• No lab required.
• Reduces treatment default.
• Inexpensive.

DISADVANTAGES

• Over-treatment (treats multiple pathogens for a single pathogen infection).
• Misses asymptomatic infections.
• Cannot diagnose syphilis or HIV reliably.

PARTNER MANAGEMENT

• Essential part: treat sexual partner simultaneously (partner notification).
• Prevents re-infection (ping-pong transmission).

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Q18. Rashtriya Bal Swasthya Karyakram (RBSK)

• 0-6 weeks: Newborns at delivery points.
• 6 weeks - 6 years: Anganwadi Centres (AWCs).
• 6-18 years: Government schools.

CONCEPT: 4Ds SCREENING

1. Defects at birth (e.g., congenital heart disease, cleft lip/palate, neural tube defects, Down syndrome)
2. Deficiencies (e.g., anemia, Vitamin A deficiency, Vitamin D deficiency, iodine deficiency)
3. Diseases (e.g., otitis media, rheumatic heart disease, skin infections, dental caries)
4. Developmental delays including disability (e.g., vision, hearing, locomotor, cognitive impairment)

IMPLEMENTATION

• 2 AYUSH doctors (or MBBS/BDS) + 1 ANM + 1 Pharmacist per team.
• Each block has 2 MHTs.
• Visit AWCs and Government schools periodically.
• Screen children using standardized tools.

• Child with suspected condition → District Early Intervention Centre (DEIC).

• Located at District Hospital.
• Multi-disciplinary team: Paediatrician, Ophthalmologist, ENT specialist, Physiotherapist, Speech therapist, Psychologist, Social worker.
• Provides free treatment and rehabilitation.
• Surgical correction (free): cleft lip/palate, congenital heart disease, club foot - under RBSK-linked NHM funding.

SIGNIFICANCE

• India's largest child health screening initiative.
• Covers ~270 million children in government schools and AWCs.
• Early detection → better outcomes for treatable conditions.

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Q19. Cancer Registry

DEFINITION

PURPOSE

• Determine the incidence, prevalence, and mortality of cancer.
• Identify high-risk populations and geographic patterns.
• Plan and evaluate cancer control programmes.
• Research on cancer etiology and outcomes.

TYPES OF CANCER REGISTRIES

• Covers all cancer cases in a defined geographic population.
• Provides incidence data (new cases per population per year).
• Most useful for epidemiology and policy.
• Examples in India (under NCRP - National Cancer Registry Programme by ICMR):
  • Bangalore, Chennai, Delhi, Mumbai, Kolkata (urban PBCRs).
  • Barshi, Ahmedabad, Nagpur (urban).
  • Rural PBCRs: Wardha, Cachar.

• Records all cancer cases presenting to a specific hospital.
• Provides data on treatment, survival, and outcomes.
• Does not give true incidence.
• Examples: Kidwai Memorial Institute, Tata Memorial Hospital, AIIMS.

• Based on pathological reports from laboratories.
• Used where population data is unavailable.

NATIONAL CANCER REGISTRY PROGRAMME (NCRP)

• Established by ICMR (Indian Council of Medical Research) in 1982.
• Coordinates both PBCRs and HBCRs across India.
• Publishes annual "Cancer Incidence in Five Continents" (with IARC/WHO).
• Published "ICMR Cancer Report" documenting burden and trends.

• Leading cancers in India (males): Mouth, Lung, Colorectal, Stomach.
• Leading cancers in India (females): Breast (most common), Cervix, Ovary, Uterus.
• ~14 lakh new cancer cases per year in India.

DATA COLLECTED

• Demographics, diagnosis (ICD-10), histology (ICD-O), stage, treatment, survival.

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Q20. Social Security

DEFINITION

NINE CONTINGENCIES (ILO):

1. Medical care
2. Sickness benefit
3. Unemployment benefit
4. Old age benefit
5. Employment injury benefit
6. Family (child) benefit
7. Maternity benefit
8. Invalidity (disability) benefit
9. Survivors' (death) benefit

COMPONENTS OF SOCIAL SECURITY IN INDIA

1. ESI (Employee State Insurance) - 1948:
   • Covers workers earning ≤ Rs. 21,000/month in specified industries.
   • Contributions: Worker (0.75%), Employer (3.25% of wages).
   • Benefits: Sickness, maternity, disablement, dependent's benefit, free medical care.
2. EPFO (Employees' Provident Fund Organisation):
   • Provident Fund, Pension (EPS), Insurance (EDLI).
   • Covers formal sector employees.
3. PM Suraksha Bima Yojana: Accidental death/disability insurance (Rs. 2 lakh) @ Rs. 20/year.
4. PM Jeevan Jyoti Bima Yojana: Life insurance (Rs. 2 lakh) @ Rs. 436/year.

1. National Social Assistance Programme (NSAP):
   • Indira Gandhi National Old Age Pension Scheme (IGNOAPS): Rs. 300-500/month for BPL elderly (60+).
   • National Family Benefit Scheme: Rs. 20,000 lump sum to BPL families on death of breadwinner.
   • Indira Gandhi National Widow Pension Scheme.
   • Indira Gandhi National Disability Pension Scheme.
2. Ayushman Bharat - PM-JAY: Health insurance (Rs. 5 lakh/year) for BPL families.
3. Mahatma Gandhi NREGS: 100 days of guaranteed employment - livelihood security.
4. PDS (Public Distribution System): Subsidized/free food grains (PM-GKAY).
5. PM Awas Yojana: Subsidized housing for BPL.

• PM-SYM (PM Shram Yogi Maan-Dhan): Pension of Rs. 3000/month for unorganized workers (60 years).
• Atal Pension Yojana: Pension for unorganized workers.

SIGNIFICANCE IN PUBLIC HEALTH

• Social security reduces catastrophic health expenditure.
• Ensures financial access to health care (health as a right).
• Reduces poverty and its health consequences.
• Maternal and child health outcomes improve with maternity and family benefits.
• Reduces occupational health hazards through ESI compensation.

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Reference: Park's Textbook of Preventive and Social Medicine, 25th Edition (K. Park) | NACO Guidelines | NTEP NIKSHAY Resources | NHM Programme Operational Guidelines | WHO Publications.