Occurrence of diarrheagenic Escherichia coli genes in raw water of water treatment plants.

Environmental Science and Pollution Research International
Shih-Wei HuangYi-Chou Chiu

Abstract

The high incidences of waterborne diseases are frequently associated with diarrheagenic Escherichia coli (DEC). DEC may pose a health risk to people who contact surface water for recreation or domestic use. However, there is no published report on the monitoring of DEC in drinking water sources in Taiwan. In this study, the occurrence of DEC genes in raw water for water treatment plants in Taiwan was investigated. Raw water samples were taken from water treatment plants adjacent to the Kaoping River in southern Taiwan. Each water sample was treated with membrane filtration followed by DNA extraction from the concentrate and concentrate enrichment, respectively. The target genes for various DEC strains of genes were identified, including enteroaggregative E. coli (EAEC), enterohemorrhagic E. coli (EHEC), enteroinvasive E. coli (EIEC), enteropathogenic E. coli (EPEC), and enterotoxigenic E. coli (ETEC). Among 55 water samples analyzed, DEC genes were detected in 16 (29.1%) samples. Strain-specific genes for EAEC, EHEC, EIEC, and EPEC were found in the percentages of 3.6%, 10.9%, 9.1%, and 9.1%, respectively. The specific gene for ETEC is not detected in the study. By looking at the presence/absence of specific genes and water sam...Continue Reading

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Citations

May 23, 2013·World Journal of Microbiology & Biotechnology·Kenneth WidmerHor-Gil Hur
May 4, 2016·Environmental Science and Pollution Research International·Akebe Luther King AbiaMaggy Ndombo Benteke Momba
May 23, 2016·International Journal of Food Microbiology·Baskar BalakrishnanMajed El-Dweik
Jul 22, 2017·Journal of Microbiological Methods·Connie WaldenWen Zhang
Jul 18, 2019·Journal of Water and Health·Caroline Rodrigues da SilvaJacinta Sanchez Pelayo
Oct 21, 2018·The Science of the Total Environment·ElMahdy Mohamed ElMahdy IbrahimMohamed Nasr Shaheen

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