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may 4, 1796 - First Vaccinations

Description:

Edward Jenner's first vaccination. After successfully using cowpox to help vaccinate against smallpox in humans, the experiment was immediately followed by public criticism for many different reasons ("History of Anti-vaccination Movements")

Added to timeline:

Byo
9 Dec 2019

Date:

may 4, 1796
Now
~ 228 years ago