AWhat changed
Compared cholera occurrence with water exposure and water suppliers, using observations across households and outbreaks to investigate a route of transmission and possible prevention.
Scientific scope
Compared cholera occurrence with water exposure and water suppliers, using observations across households and outbreaks to investigate a route of transmission and possible prevention. Scope limitation: This record is the 1855 treatise and its reported investigations. It does not attribute the discovery of the cholera organism to Snow, treat removing a pump handle as a randomized trial, or absorb later sanitation work and Henry Whitehead's investigation into Snow's authorship.
Evidence
Assessment uses the catalogue-linked source evidence for the stated contribution. This record is the 1855 treatise and its reported investigations. It does not attribute the discovery of the cholera organism to Snow, treat removing a pump handle as a randomized trial, or absorb later sanitation work and Henry Whitehead's investigation into Snow's authorship.
Contributors
- John Snow · SCIENCE: Named source contributor; exact labor shares are not measured.
- UCLA John Snow Archive: original 1855 treatise, Part 1
- UCLA John Snow Archive: original treatise, water-company comparison
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
Full scientific record · Browse contribution grades · Request a correction