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John Snow Cholera Map

shared by SeeingStructure on Dec 28, 2011 in Health

John Snow Cholera Map

shared by SeeingStructure on Dec 28, 2011 in Health

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Snow used this spot map to illustrate how cases of cholera were centred around a water pump. This helped to show that cholera was being spread through the water, and not by air as was thought at the time.
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Rank: 364 of 8539 in Health

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C.F. Cheffins

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John Snow

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