Aha Trivia Stuff Everyone Should Know
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What did John Snow identify as the source of a cholera outbreak?

A polluted public water pump.

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  1. A polluted public water pump ✔
  2. A bakery's bread
  3. A crowded theater

Why: John Snow identified a polluted public water well as the source of an 1854 cholera outbreak in London.

Huh, didn't know that: John Snow identified a polluted public water well as the source of an 1854 cholera outbreak in London.

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Snow's map was a 'cool' way to find the source.
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References

Answer: A polluted public water pump. John Snow identified a polluted public water well as the source of an 1854 cholera outbreak in London.

  1. Public health en.wikipedia.org/wiki/Public_health
    John Snow's identification of a polluted public water well as the source of an 1854 cholera outbreak
    Checked 2026-11-07.

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