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. 2010 Feb;28(1):34–41. doi: 10.3329/jhpn.v28i1.4521

Fig. 3.

Fig. 3.

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 not applying any water-treatment method are included. Categories of E. coli contamination are based on guidelines by the WHO (12). Three households with dugwell water supplies, barrel, or tap-samples were not collected. Six households did not use a transport vessel;

CFU=Colony-forming unit;

WHO=World Health Organization