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13 out 1879 ano - Variolation

Descrição:

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

Adicionado na linha do tempo:

The History of Infectious Diseases

14 dez 2018

1

0

1006

Data:

13 out 1879 ano

Agora

~ 146 years ago

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