coli, above which there is a risk of gastrointestinal disease.Į. coli strains can be both pathogenic and nonpathogenic, epidemiological studies led to international regulations of the World Health Organization and the European Union (2006/7/EC) defining reliable threshold values for concentrations of E. In order to assess the public health risk associated with surface water, Escherichia coli isolates in combination with intestinal enterococci were selected as relevant indicators of the presence of waterborne human pathogens of fecal origin. In contrast, persistent strains able to survive from 4 to 14 days were more often found in water with low levels of fecal bacteria, belonged mainly to the B1 phylogroup, often harbored only one virulence factor, kspE or ompT, and were able to grow at 7☌. coli isolates that rapidly lost their culturability were more frequently isolated in water recently contaminated by fecal bacteria of human origin, and most were multiresistant to antibiotics and harbored several virulence factors.

coli survival types, able to survive from between 7 and 14 days to less than 2 days, coexisted in the water. coli strains and genotypic and phenotypic characteristics was analyzed. The relationship between the survival of E.

coli strains among a collection of 352 strains to carry out a microcosm experiment in filtered estuarine water for 14 days at 10☌. coli isolates collected from bodies of water in France exhibiting distinct profiles of contamination, defined according to the following criteria: vicinity of the point sources of contamination, land use, hydrology, and physicochemical characteristics of the receiving water. However, water environments are now recognized as a secondary habitat where some strains can survive.

Escherichia coli, a commensal bacterium from the intestinal tracts of humans and vertebrate animals, has been used as one of two bacterial indicators of fecal contamination, along with intestinal enterococci, to monitor the microbiological quality of water.

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