Vaccine-derived poliomyelitis.
D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D011051:Poliomyelitis / Q000209:etiology*; D017955:Poliovirus / Q000302:isolation & purification; D011055:Poliovirus Vaccine, Oral / Q000009:adverse effects*
D011055:Poliovirus Vaccine, Oral