A fully immunized child as per the National Immunization Schedule presents at 10 years of age for school entry verification. Which vaccine does the NIS specify at 10 years?
- A Td (tetanus diphtheria toxoid), first booster ✓
- B TT (tetanus toxoid) adult formulation, first booster
- C DTaP booster
- D No vaccine is due at 10 years
Correct answer: A. Td (tetanus diphtheria toxoid), first booster
Explanation
The National Immunization Schedule gives Td at 10 years and again at 16 years to maintain protection against tetanus and diphtheria through adolescence. India switched from plain TT to Td for these adolescent boosters so that diphtheria immunity, which wanes after childhood doses, is also boosted. DTaP is not part of the government schedule at any point, and no vaccine is due at 10 years only if the child missed the Td slot.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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