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11 h 58 m, 16 maio 1721 ano - Lady Mary Montagu

Descrição:

Mary Montagu traveled to Asia where she saw variolation in action. When she returned to Europe she inoculated infants and prisoners, and then they were deliberately exposed to smallpox. When they didn't contract the disease, many royals in Europe participated in variolation.

Adicionado na linha do tempo:

Data:

11 h 58 m, 16 maio 1721 ano
Agora
~ 304 years ago