title: Poliomyelitis worldwide.
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D003906:Developing Countries; D006801:Humans; D007114:Immunization; D007223:Infant; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control; D006113:United Kingdom