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May 1, 2025
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197516
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mar 18, 1854 - John Snow

Description:

60% of people frinking water from pump had cholera
VS 7% of people drinking from another pump
it was dirty water not miasma

Added to timeline:

14 Dec 2018
1
0
497

Date:

mar 18, 1854
Now
~ 171 years ago