**Question:** Eight months old child had history of unusual crying and convulsions following previous vaccination after BCG, DPT & OPV (first dose) and Hepatitis B. Now parents have brought child for next doses of vaccination. Which vaccine is contraindicated in this situation?

**Core Concept:** Contraindications in pediatric vaccination refer to situations where administering a particular vaccine is not recommended due to increased risk of adverse reactions.

**Why the Correct Answer is Right:** In this case, the child has a history of severe adverse reactions following previous vaccinations, including BCG, DPT, and OPV. These reactions indicate the child has a heightened risk of experiencing severe adverse reactions upon subsequent vaccination.

**Why Each Wrong Option is Incorrect:**

A. DPT (Diphtheria, Pertussis, Tetanus) vaccine is not contraindicated in this situation, as the child has already received the DPT vaccine and survived the adverse reactions. This suggests that the child is not severely allergic to these components and can safely receive future doses of DPT.

B. OPV (Oral Polio vaccine) is not contraindicated, as the child has already received the OPV vaccine and survived the adverse reactions. This also indicates that the child can tolerate the oral polio vaccine.

C. BCG (Bacille Calmette-Guérin) vaccine is not contraindicated, as the child has already received the BCG vaccine and survived the adverse reactions. This suggests that the child can tolerate the BCG vaccine.

D. Hepatitis B vaccine is not contraindicated, as the child has already received the Hepatitis B vaccine and survived the adverse reactions. This indicates that the child can tolerate the Hepatitis B vaccine.

**Correct Answer:** None of the vaccines (BCG, DPT, OPV, and Hepatitis B) are contraindicated in this situation. The child has demonstrated tolerance to these vaccines after previous administration. Parents should consult with a pediatrician or immunologist before proceeding with the next scheduled vaccinations to ensure they choose the appropriate vaccines for the child.