11 h 58 m, 16 mayo 1721 año - Lady Mary Montagu
Descripción:
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.
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11 h 58 m, 16 mayo 1721 año
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