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mar 2, 1796 - Vaccine

Description:

Edward Jenner discovers that purposefully giving people cowpox, a harmless disease but similar to smallpox, makes them immune to smallpox. He called this new method "vaccination."
(from http://broughttolife.sciencemuseum.org.uk/broughttolife/people/edwardjenner)

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Date:

mar 2, 1796
Now
~ 229 years ago

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