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Protective efficacy of BCG vaccine against leprosy in southern Malaŵi
D M Baker1, J S Nguyen-Van-Tam, S J Smith
1Department of Surgery, University of Nottingham Medical School, Queen's Medical Centre.
Abstract:
This paper describes a matched case-control study to determine the efficacy of BCG vaccine in preventing the occurrence of leprosy in southern Malaŵi, a previously unstudied area. The BCG immunization rate amongst 145 individuals with leprosy was 44.8%, compared to 62.5% in 290 matched controls. The protective efficacy of BCG vaccine against leprosy in this region was estimated to be 63.6%; smallpox immunization had no effect. These findings support the view that BCG vaccine should be considered as a control measure in areas where leprosy is endemic.
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