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3 marzo 1955 anni - Polio Vaccine Developed

Descrizione:

Dr. Jonas Salk developed an inactivated polio vaccine (IPV) and it became available in the United States. The United States was subsequently declared polio-free in 1979.

Aggiunto al nastro di tempo:

Public Health Timeline

ByMackenzie Collins
16 gen 2019
0
0
562

Data:

3 marzo 1955 anni
Adesso
~ 70 years ago

Immagini:

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