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jan 7, 1796 - Vaccines

Description:

First vaccines. Edward Jenner invented a method to protect against smallpox in 1796. The method involved taking material from a blister of someone infected with cowpox and inoculating it into another person's skin; this was called arm-to-arm inoculation.

Added to timeline:

21 Sep 2017
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Industrialization

Date:

jan 7, 1796
Now
~ 222 years ago
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