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John Snow, Physician, reformer. During the cholera epidemics of the late 1840s and early 1850s, physician John Snow realized that cholera is transmitted through contaminated water. His essay, "On the Mode of Communication of Cholera" was first published in 1849 but did not immediately lead to reforms. A second edition of the paper described his epidemiological study of cholera cases in the Broad Street region of London in the epidemic of 1854. Snow was popularly known at the time as the doctor who "broke" the Broad street pump handle because he was tired of waiting for reform. In fact, he convinced the local board of health to shut the pump down after presenting his evidence, which included a map showing cholera cases clustered around the Broad Street water pump. In any event, the high profile incident added to calls for sanitary reform from England's emerging progressive movement....
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John Snow, Physician, reformer. During the cholera epidemics of the late 1840s and early 1850s, physician John Snow realized that cholera is transmitted through contaminated water. His essay, "On the Mode of Communication of Cholera" was first published in 1849 but did not immediately lead to reforms. A second edition of the paper described his epidemiological study of cholera cases in the Broad Street region of London in the epidemic of 1854. Snow was popularly known at the time as the doctor who "broke" the Broad street pump handle because he was tired of waiting for reform. In fact, he convinced the local board of health to shut the pump down after presenting his evidence, which included a map showing cholera cases clustered around the Broad Street water pump. In any event, the high profile incident added to calls for sanitary reform from England's emerging progressive movement....
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