によって adam patel 15年前.
763
John Snow (1813-58)
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
