In 1854, a cholera epidemic swept through the London neighborhood of Soho. In the course of about three weeks, over 600 people died. This incident was, tragically, not unusual in London or the ...

*Image: John Snow's 1854 map of the Soho cholera outbreak shows the concentration of cholera cases near the Broad Street pump. * See Also: - iPhone App Finds Disease Outbreaks Near You.

In this episode of Vox Almanac, Vox’s Phil Edwards explores the story behind Dr. John Snow’s famous map of the Broad Street pump. In 1854, news spread about a mysterious new cholera outbreak ...

In 1849, five whole years before the famous map, John Snow published his arguments in a work titled On the Mode of Communication of Cholera.In this short book, Snow does not mince his words ...

Snow compiled data on the two sets of London households and found that during an 1854 epidemic there were 315 deaths from cholera per 10,000 homes among those supplied by Southwark-Vauxhall but ...

The London cholera epidemic of 1854 may be the primary subject of Steven Johnson's thought-provoking The Ghost Map, but it's the many secondary subjects that make it such an engaging read.