26 März 1953 Jahr - Polio Vaccine Invented

Beschreibung:

On March 26, 1953, Dr. Jonas Salk announced on national radio that he had successfully tested a vaccine for the polio virus. In 1952, there were 58,000 reported cases and over 3,000 deaths. Polio is a disease that attacks the nervous system and can cause various types of paralysis. Dr. Salk is a celebrated doctor of his time.

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