title: Progress towards poliomyelitis eradication--horn of Africa (Ethiopia, Somalia, Sudan), January 2001-October 2002.
mesh_terms: D002675:Child, Preschool; D003906:Developing Countries; D005002:Ethiopia / Q000453:epidemiology; D005260:Female; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D015994:Incidence; D007223:Infant; D008297:Male; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D011159:Population Surveillance; D012998:Somalia / Q000453:epidemiology; D013397:Sudan / Q000453:epidemiology; D014944:World Health Organization
chemical_list: D011055:Poliovirus Vaccine, Oral