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#OTD 1954 1st mass inoculation against Polio with the Jonas Salk vaccine takes place at Arsenal Elementary School in Pittsburgh, Pennsylvania
Feb. 23, 1954 | Clinical Trials Begin for Jonas Salk’s Polio Vaccine
On Feb. 23, 1954, children from an elementary school in Pittsburgh received injections of Dr. Jonas Salk’s polio vaccine in a mass inoculation.