First Smallpox Vaccine

First Smallpox Vaccine

The earliest form of smallpox immunization was used in China in the 1500s. Doctors would take ground up scabs from people with mild cases of the disease, and blow the material into their nostrils. This lead to a mild version of the disease which had a mortality rate of ~2%.(20-30% if untreated).

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Categories: DiseaseMisc