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11h 48min, jun 14, 1796 y - El gran avance de Jenner

Description:

Edward Jenner (1749-1823), médico inglés, aprendió de una lechera que se creía protegida de la viruela porque había contraído viruela vacuna Jenner decidió probar la hipótesis.

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Vacunación

ByReDCid UvU
16 Nov 2017
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Date:

11h 48min, jun 14, 1796 y
Now
~ 229 years ago

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