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Wednesday, April 18, 2018
At first, no one could quite figure how cholera was infecting people, and the common thought blamed vapors or people's breathing. John Snow, a doctor already well established in London circles and practice, focused on a hypothesis that cholera was spread by shared water. However, many of the other doctors and officials thought a water-borne disease idea was a silly concept.
By creating the spatial relationship, Snow was objectively able to display that the cluster of cholera infections in 1854 was within close proximity to one water source - the Broad Street Water Pump. Using this information, Snow then convinced the local city authorities to remove the pump handle, making it inoperative. With the source gone, the cholera infections soon died down, and Snow's hypothesis was supported.
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