WHO regroups efforts against polio resurgence in Africa.
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D017954:Africa South of the Sahara / Q000453:epidemiology; D004196:Disease Outbreaks / Q000517:prevention & control*; D032541:Mass Vaccination; D011051:Poliomyelitis / Q000453:epidemiology* / Q000517:prevention & control* / Q000821:virology; D017955:Poliovirus; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage*; D023321:Poliovirus Vaccines
D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines