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Month: April 2019

Snow cholera map

A Public Health Detective Story: John Snow, Cholera, and the Germ Theory of Disease

Posted on April 14, 2019July 3, 2022 by Jennifer Tsang

It’s 1854 in London. The third major cholera pandemic was racing through the city. Spreading from the Ganges delta of India since 1837, it’s claimed over a million lives mostly among Asia, Europe, and North America. Within the Soho district of Westminster, London, things weren’t looking good. The London sewer system had not reached Soho,…

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