title: Dury service.
authors.forename: D
authors.initials: D
authors.lastname: Carlisle
mesh_terms: D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D011051:Poliomyelitis / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral; D015024:Zambia
chemical_list: D011055:Poliovirus Vaccine, Oral