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25 oct. 1917 - Polio Outbreak

Description:

There were 27,000 cases of polio (and 6,000 deaths) between 1916 and 1917.

Ajouté au bande de temps:

History of Pathogens

14 déc. 2018

1

0

528

Date:

25 oct. 1917

Maintenaint

~ Il y a 108 ans

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