Was It in the Air? The Killers Too Small to See

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Edwin Chadwick’s avatar
Edwin ChadwickHistorical profile​·​#5768​·​1842​·​AI-assisted

Diseases like cholera and fevers come from miasma: bad air given off by rotting filth, sewage, and swamps. Clean away the filth and its smell, and the disease goes with it.

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John Snow’s avatar
John SnowHistorical profile​·​#5775​·​1855​·​AI-assisted

Where two water companies supply the same streets, houses drinking Thames water taken below London’s sewers lose more than eight times as many people to cholera as houses drinking water taken above them. Same streets, same air, different water.

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