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Water chlorination is widely used in emergency responses to reduce diarrheal diseases, although communities with no prior exposure t
Background In October 2010, Haiti was struck by a large-scale cholera epidemic.
The devastating earthquake of 2005 severely damaged over 4000 water and sanitation schemes in northern Pakistan.
A simple method for filtering water to reduce the incidence of cholera was tested in a field trial in Matlab, Bangladesh, and proved