American doctor and bacteriologist. At the beginning of his career he collaborates in the research that on the flu forward Francis. It focuses its attention on the treatment and cure of polio. In 1953 he successfully directed a mass vaccination against infantile paralysis. The Salk system to end polio is improved by Sabin. He was in charge as Director of the Institute of Virological Research and the Institute of Biological Studies of San Diego.

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