## IAP Immunisation Schedule at 9–12 Months **Key Point:** The IAP schedule specifies precise timing for vaccines in the second half of the first year. The PCV booster dose timing is a commonly tested high-yield fact. ### Vaccines at 9 Months and 12 Months | Vaccine | Age | Route | IAP Recommendation | |---------|-----|-------|--------------------| | Measles (MR/MMR) | 9 months | SC | First dose at 9 months ✓ TRUE | | Hepatitis A | 12 months | IM | First dose at 12 months ✓ TRUE | | PCV Booster | 9 months | IM | Booster after primary series (6, 10, 14 weeks) given at **9 months**, NOT 12 months ✗ FALSE | | Japanese Encephalitis | Endemic areas | IM | Recommended at 9 months (≥9 months) in endemic areas per IAP ✓ TRUE | **High-Yield:** According to the IAP immunisation schedule, the PCV (Pneumococcal Conjugate Vaccine) booster dose is given at **9 months**, following the primary series at 6, 10, and 14 weeks. Option C incorrectly states it is given at 12 months — this is the FALSE statement and hence the correct answer for this EXCEPT question. ### IAP Schedule at Key Milestones 1. **6, 10, 14 weeks:** PCV primary series (3 doses) 2. **9 months:** PCV booster dose; Measles (MR) first dose; Japanese Encephalitis first dose (in endemic areas) 3. **12 months:** Hepatitis A first dose 4. **15–18 months:** Hepatitis A second dose; MMR second dose; DPT booster; OPV booster **Clinical Pearl:** The PCV booster at 9 months is a frequently tested point. Do not confuse it with the 12–15 month timing used in some international schedules (e.g., CDC/ACIP). The IAP schedule places the PCV booster at 9 months, not 12 months. **Reference:** IAP Immunisation Timetable (latest edition); Park's Textbook of Preventive and Social Medicine.
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