What year did he trace the cholera outbreak?
1892
1854
1800
1921
Answer
In 1854, John Snow, a British physician, traced the cholera outbreak to a single water pump on Broad Street in Soho, London. He mapped the cases of cholera and found that they were clustered around the pump. He also found that people who drank the water from the pump were more likely to get cholera than those who did not.
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