This book deals with a cholera outbreak in London in 1854 and environmental and hygeine conditions that existed at that tima.
In 1854 itwas commonly believed that cholera was spread by foetid air but it was Dr.John Snow who conclusively prooved that it was waterborne.This result was achieved by careful investigation,mapping,case histories,surveillance,collection of data and statistics.All these factors are woven into a thrilling detective story by the author.
Equally fascinating is the social comentary of the times with its filth,sewage, horrendous housing and poverty.
The principles of disease investigation used by Snow are the basis of epidemiology which is practised today.
The maps ,diagrams and illustrations are good but I do not like the title of the book "The Ghost Map"which hs no relevance to the investigation of the outbreak.
The notes and bibliography are good but it is surprising Snows book "The Broad Street Pump"is not listed.
110 years later in 1964 a virtually identical incident occured in Hong Kong known as "The Temple Street Well".
Abook to be recommended.