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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Robert Koch’s avatar
Robert KochHistorical profile​·​#5781​·​1876​·​AI-assisted

Anthrax comes from one particular germ. Grown outside any animal for eight generations, it still gives mice anthrax. Its spores survive in the soil for years, which is why some pastures stay deadly, whatever their air.

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