The winter 1996 mass immunisation campaign--is it the best strategy for South Africa at this time?
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Coetzee
D006801:Humans; D007114:Immunization / Q000592:standards*; D017589:Immunization Programs / Q000379:methods; D008457:Measles / Q000517:prevention & control; D011051:Poliomyelitis / Q000517:prevention & control*