Expanded programme on immunization (EPI).
D001210:Asia, Southeastern / Q000453:epidemiology; D001211:Asia, Western / Q000453:epidemiology; D002675:Child, Preschool; D005202:Asia, Eastern / Q000453:epidemiology; D006801:Humans; D007114:Immunization; D017589:Immunization Programs / Q000458:organization & administration*; D007223:Infant; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D017955:Poliovirus / Q000302:isolation & purification; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D011159:Population Surveillance; D014944:World Health Organization / Q000458:organization & administration
D011055:Poliovirus Vaccine, Oral