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1 janv. 1955 - polio vaccine

Description:

the polio vaccine changed thousands of lives, not only saving them, but helping them survive too. polio was a major problem in the 1950s, as it killed 3,145 people per year! that may not seem like much now, but it was a lot back then.



.https://www.historylearningsite.co.uk/inventions-and-discoveries-of-the-twentieth-century/inventions-1900-to-1990/

Ajouté au bande de temps:

20 févr. 2019
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244

Date:

1 janv. 1955
Maintenaint
~ Il y a 70 ans

Les images: