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Water samples along the transmission pathway
The thicknesses of the arrows are proportional to the contamination with E. coli (CFU/100 mL). Only households that were applying a water-treatment method are included. Categories of E. coli contamination are based on the WHO criteria (12). Two households with dugwell water supplies, barrel, or tap-samples were not collected. Eleven households did not use a transport vessel;
CFU=Colony-forming unit;
WHO=World Health Organization
