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13 ottob 1879 anni - Variolation

Descrizione:

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

Aggiunto al nastro di tempo:

The History of Infectious Diseases

14 dic 2018

1

0

1006

Data:

13 ottob 1879 anni

Adesso

~ 146 years ago

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