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6 feb 1854 anni - John Snow

Descrizione:

Snow believed that cholera was caused by dirty water and not miasma. He had authorities remove the handle on a pump on Broad Street in Soho. 60% of the people who drank from this pump had cholera

Aggiunto al nastro di tempo:

Data:

6 feb 1854 anni
Adesso
~ 171 years ago