Jonas Salk
Dr salk
Wilma Rudolph had polio but she also ran track with polio.
Jonas Salk developed the polio vaccine. This does not cure polio but it does prevent it. Polio remains incurable.
Jonas Salk developed a polio vaccine in the nineteen sixties.
I think that polio was virulent before 1955 when the vaccine was developed. Now, I think, since we have developed a vaccine, it isn't as virulent.
Jonas Salk in 1952
He developed the polio vaccine.
Jonas Salk
In the 1950s, Salk developed the first polio vaccine, an injection. In 1962, Sabin developed the oral polio vaccine, taken by mouth, and still used, at present.
Jonas Salk developed the first polio vaccine in 1952.
Jonas Salk in 1955.
He developed the Polio Vaccine