Polio Vaccine |
IPOL |
Two polio vaccines are used throughout the world to combat polio. The first was invented by Jonas Salk and first tested in 1952 and announced to the world by Salk on April 12, 1955. It consists of an injected dose of killed polio virus. Albert Sabin produced an oral polio vaccine using live but weakened virus in 1962.
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Two polio vaccines are used throughout the world to combat polio. The first ...
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