Route of administration and dose of BCG vaccine for a 3-month-old baby is–

Correct option is A

Sol. BCG (Bacillus Calmette–Guérin) vaccine is administered intradermally at the insertion of the left deltoid with a dose of 0.1 ml for infants above 1 month of age. For neonates (under 1 month), the dose is 0.05 ml. The vaccine protects against severe forms of tuberculosis like TB meningitis and miliary TB in children and is part of the Universal Immunization Programme.
Explanation of each option:
· (a) Intra Dermal, 0.1 ml – Correct. This is the standard dose and route for BCG in infants ≥1 month of age, as per national immunization guidelines.
· (b) Subcutaneous, 0.1 ml – Incorrect. BCG must be given intradermally. Subcutaneous administration can cause abscess or poor immunity.
· (c) Intra Muscular, 0.5 ml – Incorrect. This route and dose are used for other vaccines (like DPT, Hep B), not BCG.
· (d) Subcutaneous, 0.5 ml – Incorrect. This is neither the correct route nor the appropriate dose for BCG administration.