John Snow is often called the founder of epidemiology, the study of health in populations. He is best known for his work on tracking the spread of cholera during an epidemic in London in 1854.

For 14 weeks in the late summer of 1853, London suffered one of its worst cholera outbreaks. The leading voices in medicine believed the disease emanated from the foul gasses of London’s polluted ...

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In 1848, there was a second outbreak of cholera in London. Dr John Snow, a physician and specialist ... however by this time the epidemic had passed its peak. Despite having statistical evidence ...

In June 1832, two events stirred up political conflict in Lower Canada: the Place d'Armes by-election, which turned into a tragedy costing several lives, and the cholera epidemic. At the beginning ...

who was the first to find evidence that cholera spreads through tainted water. John Snow started mapping incidences of the disease in Soho, and noticed clusters around the Broad Street water pump.

In June 1832, two events stirred up political conflict in Lower Canada: the Place d'Armes by-election, which turned into a tragedy costing several lives, and the cholera epidemic. At the beginning ...