Duration of protection accorded by live oral poliovirus vaccine.
D002648:Child; D006801:Humans; D007112:Immunity, Maternally-Acquired; D011051:Poliomyelitis / Q000517:prevention & control; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage*; D013997:Time Factors
D011054:Poliovirus Vaccine, Inactivated