Expanded programme on immunization. National immunization days. India.
D002675:Child, Preschool; D006801:Humans; D017589:Immunization Programs; D007194:India / Q000453:epidemiology; D007223:Infant; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D014944:World Health Organization
D011055:Poliovirus Vaccine, Oral