The 1850s map that changed how we fight outbreaks

Cool bit of history in this recent video from Vox.

In this episode of Vox Almanac, Vox’s Phil Edwards explores Dr. John Snow’s map of the Broad Street Pump, which changed epidemiology forever.

In 1854, news spread about a mysterious new cholera outbreak in London. At the time, doctors and scientists largely believed the disease traveled in a “miasma” — a floating cloud of sickness. Dr. John Snow suspected bad water might actually be the agent of transmission — and he wanted to prove it in time to stop the outbreak.

Read more.


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