A poliovirus vaccine consisting of inactivated polio virus that is injected subcutaneously to provide immunity to poliomyelitis.
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Within 17 years, the Salk vaccine was developed, and polio was defeated.
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After seven years, a field trial was set up to test the Salk vaccine.
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It will soon supplant the Salk vaccine.
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Photo: Courtesy March of Dimes Polio was a feared condition until 1955 when the Salk vaccine was introduced.
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The nationwide study "designed to test the safety and efficacy" of the Salk vaccine had officially begun.
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The Sabin vaccine was adopted as the standard by 1961, the Salk vaccine remembered mainly as a historically important stopgap.
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Salk vaccine kind of shots.