1 ene 1796 año - Edward Jenner, inventor of the smallpox vaccine

Descripción:

Using cowpox, a similar disease to smallpox, Jenener created an effective means of vaccination

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Añadido al timeline:

microbiotimlin

ByMiles Thomas

hace 9 meses atrás

fecha:

1 ene 1796 año

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~ 229 years ago

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