In India's NIS, BCG vaccination is recommended at birth or as early as possible after birth. If BCG has not been given at birth, up to what age can it be given without a tuberculin test?
- A 6 months
- B 12 months
- C 3 months ✓
- D 5 years
Correct answer: C. 3 months
Explanation
BCG can be given up to 3 months of age without a prior Mantoux (tuberculin) test. Beyond 3 months, a Mantoux test is recommended before BCG to exclude already-infected children who would not benefit and may have exaggerated reactions. Beyond 5 years, BCG is generally not recommended. India's UIP schedule recommends BCG at birth; if missed, catch-up should be done as early as possible and within 3 months to avoid the need for prior Mantoux testing.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
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