WHO and UNICEF focus on eradicating polio in West Africa.
D000354:Africa, Western / Q000453:epidemiology; D006801:Humans; D017589:Immunization Programs; D011051:Poliomyelitis / Q000517:prevention & control*; D023321:Poliovirus Vaccines / Q000008:administration & dosage*; D014480:United Nations; D014944:World Health Organization
D023321:Poliovirus Vaccines