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Salk Jonas Edward

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Salk  (sôlk), Jonas Edward 1914-1995.
American microbiologist who in 1954 developed the first effective vaccine against polio, using an inactivated form of the virus. Salk's vaccine, which was administered by injection, was widely used until 1959 when Albert Sabin introduced an orally administered vaccine derived from a live form of the virus.


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