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1813–1858

John Snow

The physician whose investigation connected cholera deaths and water access around the Broad Street pump.

Documented roles

Connected Chaos Files

Roles describe the connection to each File; the File’s sources support the historical record.

Physician and investigator

The Broad Street Cholera Investigation

During a severe cholera outbreak in Soho, physician John Snow mapped deaths and interviewed residents about where they obtained water. The concentration of cases among people who used the Broad Street pump …

August–September 1854 · The former Broad Street pump, now Broadwick Street, Soho