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  Born October 28, 1914, in New York City
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  Salk earned his medical degree from the New York University School of Medicine.
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  Salk took a position at University of Pittsburgh, where he began conducting research.
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  Salk determined that there were three distinct types of polio viruses and was able to develop a "killed virus" vaccine for the disease. Salk administered the vaccine to himself, his wife, their children, and volunteers who had not had polio.
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  Testing for the polio vaccine had begun and it started to expand over the next two years. It was one of the largest clinical trials in medical history.
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  The vaccine had a great impact on the case of polio reported and there were over 57,000 cases in the United States. A decade later the numbers of polio was dropping to less than a thousand.
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  The vaccines for polio was approved for the general use and Salk had became a national hero.
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  Salk had started his own research organization know as The Salk Center for Biological Studies.
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  Salk became founding director and had continue to research.
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  He had a earned his place in medical history and will always be remembered for the cure of polio.