John Snow

author

John Snow

1813–1858

Best known for tracing a deadly cholera outbreak to a contaminated water pump, this pioneering English physician helped change how the world thinks about disease. He also made major advances in anaesthesia, bringing careful observation and practical science to medicine.

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About the author

Born in York, England, on March 15, 1813, John Snow trained in medicine after an apprenticeship in Newcastle and later studied in London. He first encountered cholera early in his career, and that experience helped shape the questions that would define his work.

Snow is now widely remembered for his investigation of the 1854 cholera outbreak in Soho, where he linked many cases to the Broad Street water pump. His mapping and case-by-case reasoning became a landmark example of epidemiology in action, and he is often described as one of the founders of modern public health.

He was also an important pioneer in anaesthesia. Snow studied the use of ether and chloroform in unusual detail and became one of the era's leading specialists, even administering chloroform to Queen Victoria during childbirth. He died in London on June 16, 1858, but his work continues to be celebrated for its clarity, courage, and lasting influence.