write some points a
bout polo vaccine
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The first polio vaccine was the inactivated polio vaccine.
It was developed by Jonas Salk and came into use in 1955.
The oral polio vaccine was developed by Albert Sabin and came into
commercial use in 1961.
Jonas Salk (1914–1995) became a national hero when he allayed the fear of the dreaded disease with his polio vaccine, approved in 1955.
Although it was the first polio vaccine, it was not to be the last; Albert Bruce Sabin (1906–1993) introduced an oral vaccine in the United States in the 1960s that replaced Salk's.
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