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 ...

Or if John Snow didn't make the storied map ... Life in Victorian London turned bleak as ten thousand deaths mounted between 1853 and 1854. ... Others believed cholera was caused by ...

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 ...

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 ...

*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.

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.

Video Clip 3: Golden Square cholera outbreak - 1854 (4:00) According to research, ... The Ghost Map. How did Dr. John Snow obtain the data he needed to prove his theory?

John Snow’s map of water suppliers in London. UCLA Department of Epidemiology. ... Another cholera outbreak began in August 1854, and Snow immediately began collecting data.