title: Progress towards poliomyelitis eradication. Angola, January 1998-June 2002.
mesh_terms: D000810:Angola / Q000453:epidemiology; D014943:Global Health; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D007223:Infant; D007231:Infant, Newborn; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage; D011159:Population Surveillance
chemical_list: D011055:Poliovirus Vaccine, Oral