Zero dose of polio vaccine is given:: (A) Before giving DPT, (B) At birth, (C) When child is having diarrhea, (D) When child is having polio
Answer is B. b. At birth(Ref: Nelson's 20/e p 1561, Ghai 8/e p 190-194)OPV zero dose: At birth or as early as possible within the first 15 days.