Multiple choice

What disease did John Snow discover contaminated the London sewage system?

  1. Tuberculosis

  2. Cholera

  3. Typhoid

  4. Malaria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

John Snow is famous for his work in 1854 identifying that a cholera outbreak in London was linked to a contaminated water pump. This discovery was a foundational moment for modern epidemiology.

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