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13 oct. 1879 - Variolation

Description:

Purposely infect an individual with smallpox to create immunity. 1-3% chance of working

Ajouté au bande de temps:

The History of Infectious Diseases

14 déc. 2018

1

0

1007

Date:

13 oct. 1879

Maintenaint

~ Il y a 146 ans

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