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1 gen 1955 anni - Polio Vaccine

Descrizione:

Jonas Salk discovers the polio vaccine. Polio was a disease that killed, and permanently crippled people (often in childhood) around the world. Salk's discovery helped save countless lives and prevented huge amounts of suffering.

Aggiunto al nastro di tempo:

8 feb 2023
1
0
538

Data:

1 gen 1955 anni
Adesso
~ 70 years ago

Immagini: