The cholera epidemic of 1854 quickly killed more than 600 people in a neighborhood of London. Officials incorrectly assumed ...

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Starting in 1819, a series of cholera pandemics spread the disease from the Ganges in India to the rest of the world, killing millions of people. In 1854, 23,000 died from the disease in the UK.

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He is best known for his work on tracking the spread of cholera during an epidemic in London in 1854. It was widely believed then that the disease spread via bad air, or miasmas. Snow had ...

And so when cholera returned in 1854, John Snow saw a chance to finally prove his theory and set about studying the patterns of disease. The disease appeared to strike randomly, both rich and poor ...