10 GEOGRAPHY

The Cartography of Contagion: A Narrative Review of Medical Geography from Snow's Cholera Map to Networked Epidemics

Medical geography---the study of where disease occurs and why place matters to health---began with a map: John Snow's 1855 tracing of cholera's deaths to the Broad Street pump, the field's founding demonstration that contagion has an address. This article presents a narrative review of that arc's canonical line: Snow's...