title: Epidemiology of poliomyelitis in Delhi.
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007194:India; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control; D014611:Vaccination