30
/pt/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
June 15, 2024
2330185
148507
2

1 jan 1796 ano - Variolation

Descrição:

Purposefully infect someone with smallpox ti create a mild infection to create immunity. There was a 30% mortality rate for smallpox versus 1-2% mortality rate from variolation.

Adicionado na linha do tempo:

Data:

1 jan 1796 ano
Agora
~ 228 years ago

Imagens: