MI are true about SALK vaccine except-
Ans. is 'a' i.e., OPV cannot be given as booster dose One or two doses of live vaccine (OPV) can be given safely as boosters after an initial course of immunization with inactivated vaccine.
OPV cannot be given as booster dose
Injections during epidemic can cause paralysis
Induces circulating antibody but no local immunity
Does not prevent multiplication of wild virus in gut