1954: Polio Vaccine
1954: Polio vaccine was tested on one million children aged six to nine. In April 1955 the vaccine was deemed “safe and effective” by NIH; the vaccine was hailed as a medical triumph of the 20th century.
1954: Polio vaccine was tested on one million children aged six to nine. In April 1955 the vaccine was deemed “safe and effective” by NIH; the vaccine was hailed as a medical triumph of the 20th century.