| Autor: |
Ferdous J; Department of Microbiology, University of Dhaka, Dhaka 1000, Bangladesh.; Copenhagen Center for Disaster Research, Section for Global Health, Department of Public Health, University of Copenhagen, 1014 Copenhagen, Denmark., Rashid RB; Department of Microbiology, University of Dhaka, Dhaka 1000, Bangladesh., Sultana R; Copenhagen Center for Disaster Research, Section for Global Health, Department of Public Health, University of Copenhagen, 1014 Copenhagen, Denmark.; Institute of Health Economics, University of Dhaka, Dhaka 1000, Bangladesh.; International Centre for Diarrhoeal Disease Research, Dhaka 1000, Bangladesh., Saima S; Department of Microbiology, University of Dhaka, Dhaka 1000, Bangladesh., Jahan Prima M; Department of Microbiology, University of Dhaka, Dhaka 1000, Bangladesh., Begum A; Department of Microbiology, University of Dhaka, Dhaka 1000, Bangladesh., Mackie Jensen PK; Copenhagen Center for Disaster Research, Section for Global Health, Department of Public Health, University of Copenhagen, 1014 Copenhagen, Denmark. |
| Abstrakt: |
This study aimed to investigate the origin of diverse pathotypes of E. coli , isolated from communal water sources and from the actual drinking water vessel at the point-of-drinking inside households in a low-income urban community in Arichpur, Dhaka, Bangladesh, using a polymerase chain reaction (PCR). Forty-six percent (57/125, CI 95%: 41-58) of the isolates in the point-of-drinking water and 53% (55/103, CI 95%: 45-64) of the isolates in the source water were diarrheagenic E. coli . Among the pathotypes, enterotoxigenic E. coli (ETEC) was the most common, 81% (46/57) of ETEC was found in the point-of-drinking water and 87% (48/55) was found in the communal source water. Phylogenetic group B1, which is predominant in animals, was the most frequently found isolate in both the point-of-drinking water (50%, 91/181) and in the source (50%, 89/180) water. The phylogenetic subgroup B2 3 , usually of human origin, was more common in the point-of-drinking water (65%, 13/20) than in the source water (35%, 7/20). Our findings suggest that non-human mammals and birds played a vital role in fecal contamination for both the source and point-of-drinking water. Addressing human sanitation without a consideration of fecal contamination from livestock sources will not be enough to prevent drinking-water contamination and thus will persist as a greater contributor to diarrheal pathogens. |
