John Snow (1813-58) Cholera
1931 - 32 Cholera epidemic
1953 - 54 Cholera epidemic
How did this come about? proof
Provided the answer to "how it spread?"
During the third visitation of cholera (1845-54)
Snow persuade the local authorties to lock the Pump
His suspicions fell on a pump in Broad Street
John Snow was a GP working in Firth Street in Soho (London)
John Snow had fought a Cholera out break in Newcastle
Years that followed, he became convinced that cholera was a waterborne disease
In 1949 published On the mode of communication of cholera
Did not push forward becuase of his nature and the hold 'miasmic theory'
Geographical map showing water source and death correlation
Supported with anecdotal evidence
7 workers who live outside the area of Broad street, but worked there died from the pump
workforce who were provided with free beer from local brewry survived
Widow who had Broad water deliverd to her died at her heamstead home her neigbours did not
Even so medical establishment did not accept choler as a waterborne disease until 10 years later
A Larger study (1856) by John Simon (medical officer, London) covering 500,000 south londeners showed
Water from Dittion - up river from London
Water from an overflowing sewer near Battersea
Looking at the 1853 - 54 cholera epedemic
was well recieved by the medical proffession became known a 'Dr snows theory'
