he stopped it by tracking down loads of people in1854 and found they all drank from a well john snow soon tracked down the well and with the evidence he had he shut the well down and cholera had gone he had saved the day
He didn't - that was John Snow of England. Snow didn't know EXACTLY what was in the water that caused cholera to spread, but he was able to prove, to most everyone's satisfaction, that it was contaminated water, and not foul air, that caused cholera to spread.
http:/en.wikipedia.org/wiki/John_Snow_(physician) I am not sure from the above article if John Snow did show that his own belief was false (that cholera was spread through the drinking water of the Broad Street pump) . He did try to demonstrate that the common belief that cholera was spread by "bad air" was false...
Ther is no such thing as a cholera vaccine. Best cure is hydration an avoiding spread by exercising strict hygiene.
In 1854 John Snow mapped the cases of cholera in Soho, London, and realised that almost all of them were likely to have taken their water from the same pump. The spread of cholera stopped when the handle of the Broad Street pump was removed.
John Snow discovered cholera in 1852, from contaminated water.
john snow improved health by finally finding a cure to cholera.
John Snow used maps to study the spread of cholera during the 1854 outbreak in London by plotting the locations of cholera cases and public water pumps on a detailed map of the area. By visually correlating the incidence of cholera with proximity to the Broad Street pump, he identified a cluster of cases linked to that specific water source. This mapping technique provided compelling evidence that contaminated water was the source of the outbreak, leading to significant public health interventions. Snow's work laid the groundwork for modern epidemiology and the use of geographic data in health studies.
He drew dot, for each death caused by cholera on a street map. Then he mad an " X " for every public water pump. Then he discovered a geographical pattern of how the disease spread.
cholera was stopped by the public health act introduced by the government
The great physician from London, Dr. john Snow proved the same in 1854. He made a map of patients from Broad street (now Broadwick street) of Soho district, London.
Nobody. It was John Snow in 1854
So he wouldn't get lost and wind up in Small Pox.