8 feb 1897 año - 1897: Hamburg, Altona, and Cholera is Proven to be Germs
Descripción:
An outbreak of cholera based around Hamburg on the river Elba ended up proving germ theory when it came clear that nearby Altona, who filtered their water, did not also get cholera.
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fecha:
8 feb 1897 año
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~ 127 years ago