SECTION II - Short Essay Questions (5 Marks Each)

APPLIED ASPECTS

Q1. A block has poor full immunization coverage. Prepare a microplan including due list, session planning, cold chain and defaulter tracking.

• A due list is a register of all eligible beneficiaries (children 0-5 years, pregnant women) in the area.
• Sources: AWC registers, birth registers, ASHA records.
• Lists beneficiaries by name, age, address, and vaccines due.
• Updated monthly to include new births and remove fully immunized children.

• Identify all sub-centres and outreach session sites (villages, AWCs).
• Decide session frequency: fixed sessions at PHC, outreach sessions at villages.
• Prepare a session calendar (dates, venues, ANM responsible).
• Estimate vaccines and supplies needed per session based on due list.
• In poor-coverage blocks: increase session frequency, conduct special catch-up campaigns.

• Vaccines require storage at specific temperatures (OPV: -15 to -25°C; other vaccines: +2 to +8°C).
• Cold chain equipment: ILR (Ice Lined Refrigerator) at PHC, vaccine carrier with ice packs for outreach.
• Cold chain point: PHC → sub-centre → session site.
• Record temperature twice daily in temperature log.
• Never store vaccines in the door of the refrigerator or near the freezer coils (ILR principle).

• A defaulter is a child who has missed a scheduled dose.
• ASHA/ANM identifies defaulters using immunization register after each session.
• Home visits are made to bring defaulters for the next session.
• "Reminder slips" are given to mothers at each visit specifying the next due date.
• Use village health registers to cross-check all children against immunization cards.

• Calculate coverage rates after each session.
• Report to MO-PHC; MO reviews microplan monthly.
• Use HMIS data to identify persistent defaulters.

Q2. A community survey shows mean Hb 9.8 g/dL among pregnant women. Discuss classification, public health significance and intervention package.

• Anaemia is the commonest nutritional deficiency in India; affects ~50% of pregnant women.
• Increases risk of: maternal mortality (direct cause: PPH, indirect: poor tolerance of blood loss), preterm birth, low birth weight, intrauterine growth restriction.
• Impairs cognitive development and immunity in the newborn.
• Mean Hb 9.8 g/dL suggests widespread dietary iron/folate deficiency - a community-level problem requiring population intervention.
• India's National Family Health Survey (NFHS-5) showed 52.2% of pregnant women are anaemic.

1. Iron and Folic Acid (IFA) supplementation: 60 mg elemental iron + 400 mcg folic acid daily for 180 days in pregnancy; start from 1st trimester.
2. Dietary counselling: Encourage iron-rich foods (green leafy vegetables, jaggery, meat, pulses); vitamin C to enhance absorption; avoid tea/coffee with meals.
3. Deworming: Single dose albendazole 400 mg in 2nd trimester (to reduce worm load reducing iron loss).
4. Malaria prophylaxis: In endemic areas - intermittent preventive treatment.
5. ANC registration and monitoring: Hb testing at 1st ANC contact and at 36 weeks; those with severe anaemia (<7 g/dL) refer for IV iron or blood transfusion.
6. WASH promotion: Improve sanitation to prevent hookworm infestation.
7. Fortification: Use of iron-fortified salt (double-fortified with iodine + iron).

Q3. Calculate chi-square from a 2×2 table conceptually and state when it is used in community medicine.

• E for each cell = (Row total × Column total) / Grand total (N)
  • E(a) = (a+b)(a+c) / N
  • E(b) = (a+b)(b+d) / N
  • E(c) = (c+d)(a+c) / N
  • E(d) = (c+d)(b+d) / N

• Degrees of freedom = (rows-1)(columns-1) = 1 for a 2×2 table.
• Compare calculated χ² with critical value at df=1: χ² > 3.84 → p < 0.05 (statistically significant).

1. Testing association between two categorical variables (e.g., smoking and lung cancer).
2. Comparing proportions in two or more groups.
3. Testing goodness-of-fit (observed vs expected distribution).
4. Used in case-control and cohort studies to assess whether exposure-disease association is significant.
5. NOT used for continuous data, small samples (use Fisher's exact test if expected cell < 5), or for measuring strength of association (use OR/RR for that).

Q4. Prepare a waste management plan for a primary health centre including segregation, storage, transport and final disposal.

• Segregation at point of generation (OPD, labour room, dressing room).
• Never mix biomedical waste with general (black bin) waste.
• Label each bin with biohazard symbol.

• Biomedical waste must not be stored beyond 48 hours at PHC.
• Storage area: separate, locked room, away from patients, labelled "Biomedical Waste Storage."
• Floors should be impermeable; drainage connected to effluent treatment plant.

• Within PHC: dedicated trolleys (not shared with general waste or food).
• External transport: contracted specialized vehicle to a Common Biomedical Waste Treatment Facility (CBWTF).
• Vehicle must have GPS, manifest system, trained driver.
• Waste manifest (Form 3) accompanies every consignment.

• PHC maintains logbook of waste generated, transported, disposed.
• Annual report to State Pollution Control Board.
• Nodal Officer designated at PHC (usually MO-PHC).

SCENARIO-BASED

Q5. A 6-month-old child has weight-for-age below -3 SD and bilateral pedal oedema. Classify and describe community-level management.

• Weight-for-age below -3 SD = severe underweight
• Bilateral pitting oedema of the feet = kwashiorkor (oedematous malnutrition)
• Combined: this child has Severe Acute Malnutrition (SAM) - complicated form (oedema is always classified as complicated SAM requiring hospital referral)

1. Refer urgently to hospital (Nutritional Rehabilitation Centre, NRC) - oedema with SAM = complicated case.
2. Give first dose of oral antibiotic (amoxicillin) before referral.
3. Prevent/treat hypoglycaemia: give 10% dextrose or sugar water orally if able to swallow.
4. Keep child warm (prevent hypothermia) - kangaroo care.
5. Do NOT give high protein feeds or RUTF immediately - risk of refeeding syndrome.

1. ASHA/AWW identification: Use mid-upper arm circumference (MUAC < 115 mm = SAM) for community screening; weight-for-height z-score.
2. NRC (Nutritional Rehabilitation Centre): 14-day inpatient protocol:
   • Phase 1 (Days 1-7): Stabilization - F-75 therapeutic milk (low protein, low energy), treat infections.
   • Phase 2 (Days 8-14): Rehabilitation - F-100 or RUTF, high-energy feeds.
3. Ready-to-Use Therapeutic Food (RUTF): Plumpy-nut (92 g/day for 6-month-olds) - prescribed for uncomplicated SAM.
4. Follow-up at AWC: ASHA visits weekly after discharge; MUAC measured monthly.
5. Mother counselling: Exclusive breastfeeding (this child is 6 months old - continue breastfeeding); complementary feeding initiation.
6. POSHAN Abhiyaan / Integrated Child Development Services (ICDS): Supplementary nutrition via anganwadi.
7. Address social determinants: food insecurity, sanitation, mother's nutritional status.

Q6. A researcher reports p value = 0.03 for association between indoor air pollution and COPD. Interpret in terms of statistical significance and clinical relevance.

• The p-value is the probability of obtaining the observed results (or more extreme) if the null hypothesis (no association) were true.
• p = 0.03 means there is a 3% probability that the observed association between indoor air pollution and COPD occurred by chance alone.

• The conventional threshold (alpha level) is p < 0.05.
• Since p = 0.03 < 0.05, the association is statistically significant.
• We reject the null hypothesis (H₀: no association between indoor air pollution and COPD).
• The result is unlikely to be due to chance.

• It does NOT measure the strength of association (use Odds Ratio or Relative Risk for that).
• It does NOT tell us the direction of association.
• It does NOT prove causation.

• A statistically significant result may still have low clinical relevance if the effect size is small (e.g., OR = 1.1 is statistically significant but not clinically meaningful).
• Conversely, a result with p = 0.06 may not be statistically significant but could still be clinically important.
• To assess clinical relevance, one must consider:
  1. Magnitude of association: What is the OR/RR? (e.g., OR = 3.5 is clinically important)
  2. Confidence interval: Does the 95% CI exclude 1.0? (here it would, since p < 0.05)
  3. Exposure frequency: Indoor air pollution is highly prevalent in India (biomass fuel use) - even moderate OR is highly relevant.
  4. Biological plausibility: Particulate matter → airway inflammation → COPD is well-established.
  5. Sample size: Large studies can give p < 0.05 for trivially small effects.

Q7. A coastal district faces cyclone threat. Prepare a disaster management plan focusing on vulnerable groups, water safety and disease surveillance.

1. Risk mapping: Identify low-lying areas, flood-prone zones, vulnerable populations (elderly, children, pregnant women, disabled, fisherfolk communities).
2. Early Warning System: Coordinate with IMD for cyclone warnings; activate multi-level alert system (district → block → village level).
3. Evacuation planning:
   • Identify cyclone shelters (pucca buildings > 2 storeys).
   • Pre-position food, water (ORS packets), essential medicines, first aid kits.
   • Register vulnerable groups (bedridden, disabled) for priority evacuation.
4. Training: NDRF/SDRF teams; health staff trained in mass casualty management.
5. Water safety pre-positioning: Chlorine tablets, portable water testing kits stockpiled.

1. Activate EOC (Emergency Operations Centre) at district and block level.
2. Mass evacuation: Priority for vulnerable groups - women, children, elderly, patients on dialysis/oxygen.
3. Rescue and first aid: NDRF deployment, establishment of medical camps at evacuation centres.
4. Water safety: Shut down contaminated open wells; distribute bottled/treated water; chlorinate stored water (0.5 mg/L residual chlorine).

• Identify and register all displaced persons.
• Special care for pregnant women (set up safe delivery kits), newborns (hypothermia prevention), elderly (chronic disease medication continuity).
• Psychosocial first aid for trauma victims.
• Vaccination: Tetanus toxoid for injured persons.

• Inspect all water sources for contamination before use.
• Chlorination of wells (bleaching powder: 2.5 g per 1000 litres of water).
• Test for residual chlorine (≥ 0.5 ppm) before declaring safe.
• Distribute ORS and safe water at relief camps.
• Avoid open defecation near water sources.

• Activate Integrated Disease Surveillance Programme (IDSP) - enhanced reporting (daily S/P/L forms).
• Sentinel surveillance for: cholera, acute diarrhoeal disease, acute respiratory infections, leptospirosis (from flood water), malaria, dengue.
• Rapid Response Teams (RRT) deployed in affected areas for investigation of outbreaks.
• Vector control: IRS (indoor residual spraying) for malaria; larviciding of stagnant water pools for mosquito breeding.
• Establish mobile medical units for unreachable areas.

Q8. A country has high life expectancy but rising obesity and diabetes. Discuss epidemiological transition and prevention strategy.

• India faces both Stage 1-2 (persistent infectious diseases like TB, diarrhoea) AND Stage 3-4 (rising NCDs: diabetes, hypertension, obesity).
• This is the epidemiological transition happening at a faster rate than in Western countries ("compressed transition").
• High life expectancy + rising obesity/diabetes = typical Stage 3-4 transition.

• Rapid urbanization → sedentary lifestyles.
• Dietary transition: processed food, refined carbohydrates, sugar-sweetened beverages.
• South Asians have genetic predisposition to central obesity and insulin resistance at lower BMI.
• Demographic transition: larger adult/elderly population who are metabolically vulnerable.

• Urban planning: walkable cities, cycling infrastructure, parks.
• Food policy: tax on sugar-sweetened beverages (e.g., India's GST on aerated drinks), front-of-pack food labelling.
• School-based interventions: physical activity curriculum, healthy canteen policies.

• NPCDCS (National Programme for Prevention and Control of Cancer, Diabetes, CVD, Stroke): health education, lifestyle modification counselling at PHC level.
• Dietary promotion: WHO recommendation - 400 g fruits/vegetables/day, < 5 g salt, < 10% calories from free sugars.
• Physical activity: minimum 150 minutes/week of moderate activity (WHO).
• Tobacco and alcohol control (major contributors to NCD burden).

• Population screening for diabetes (fasting blood glucose) and hypertension at 30 years of age under Ayushman Bharat Health and Wellness Centres.
• BMI and waist circumference measurement at every health contact.

• Structured diabetes care: glycaemic control, foot care, retinal screening, renal function monitoring.
• Rehabilitation for NCD complications (stroke, amputations).

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