The 1950s was a turning point for polio. Amidts deadly outbreaks, Jonas Salk developed a vaccine that saved countless from ...

wants the FDA to revoke approval of the polio vaccine. Before vaccines were ... also backed another potential prevention method, gamma globulin. In the early 1950s, over 220,000 children were ...

Polio vaccines helped eliminate the disease from the US in 1979 ... Roosevelt's foundation also backed another potential prevention method, gamma globulin. In the early 1950s, over 220,000 children ...