Poliomyelitis eradication in South Africa.
R J
RJ
Biellik
D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007114:Immunization; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D013019:South Africa / Q000453:epidemiology