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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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9 gen 1952 anni - Polio

Descrizione:

Jonas Salk develops first Polio Vaccine which is an inactive version of Polio and is administered via injection by trained health professionals, but is expensive.

Aggiunto al nastro di tempo:

Diseases and Discoveries Related That Have Impacted Recorded Human History

ByTommy Chhoeum
14 dic 2018
1
0
924

Data:

9 gen 1952 anni
Adesso
~ 73 years ago
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