title: An appraisal of polio immunization in Nigeria and other tropical African Countries.
mesh_terms: D000349:Africa; D002648:Child; D006801:Humans; D007114:Immunization; D007115:Immunization Schedule; D007223:Infant; D009549:Nigeria; D011051:Poliomyelitis / Q000276:immunology / Q000517:prevention & control*; D011054:Poliovirus Vaccine, Inactivated / Q000008:administration & dosage*; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D014329:Tropical Climate
chemical_list: D011054:Poliovirus Vaccine, Inactivated; D011055:Poliovirus Vaccine, Oral