Salk, Jonas (Edward) biographical name
(born Oct. 28, 1914, New York, N.Y., U.S.died June 23, 1995, La Jolla, Calif.) U.S. physician and researcher. He received his M.D. from New York University. Working with other scientists to classify poliovirus, he confirmed earlier studies that identified three strains. He showed that killed virus of each strain could induce antibody formation without producing disease. Salk's vaccine was released for use in the U.S. in 1955. From 1963 he directed the Salk Institute in La Jolla, Calif. He was awarded the Presidential Medal of Freedom in 1977.
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