title: The winter 1996 mass immunisation campaign--is it the best strategy for South Africa at this time.
authors.forename: E
authors.initials: E
authors.lastname: Perez
mesh_terms: D002675:Child, Preschool; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D008457:Measles / Q000517:prevention & control*; D011051:Poliomyelitis / Q000517:prevention & control*