John Snow (1813-58)
In the mid-19th century, cholera was a devastating disease, leading to significant loss of life. Despite early theories, it took years for the medical community to accept that cholera was waterborne.
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was well recieved by the medical proffession became known a 'Dr snows theory' Looking at the 1853 - 54 cholera epedemic Water from an overflowing sewer near Battersea Water from Dittion - up river from London 130 per 1000 deaths 37 per 1000 deaths Southwark Water Company Lambeth Water Company A Larger study (1856) by John Simon (medical officer, London) covering 500,000 south londeners showed Even so medical establishment did not accept choler as a waterborne disease until 10 years later Widow who had Broad water deliverd to her died at her heamstead home her neigbours did not workforce who were provided with free beer from local brewry survived 7 workers who live outside the area of Broad street, but worked there died from the pump Supported with anecdotal evidence Geographical map showing water source and death correlation Did not push forward becuase of his nature and the hold 'miasmic theory' In 1949 published On the mode of communication of cholera Years that followed, he became convinced that cholera was a waterborne disease John Snow had fought a Cholera out break in Newcastle 20,000 deaths John Snow was a GP working in Firth Street in Soho (London) His suspicions fell on a pump in Broad Street Snow persuade the local authorties to lock the Pump The No. of deaths fell During the third visitation of cholera (1845-54) Provided the answer to "how it spread?" John Snow (1813-58) Cholera How did this come about? proof 1953 - 54 Cholera epidemic John Simon 1931 - 32 Cholera epidemic
