Prevalence and characteristics of ESBL-producing E. coli in Dutch recreational waters influenced by wastewater treatment plants.

摘要: Outside health care settings, people may acquire ESBL-producing bacteria through different exposure routes, including contact with human or animal carriers consumption of contaminated food. However, faecally surface water also represent a possible route. The current study investigated the prevalence and characteristics Escherichia coli in four Dutch recreational waters role nearby waste treatment plants (WWTP) as contamination source. Isolates from were compared isolates WWTP effluents, upstream WWTPs, at discharge points, connecting bodies not influenced by studied WWTPs. E. detected all waters, an average concentration 1.3 colony forming units/100ml, 62% samples. In similar concentrations, indicating existence additional ESBL-E. sources. identical ESBL-genes, phylogenetic background, antibiotic resistance profiles, sequence type, obtained effluent sites same watershed, on day; occasionally this included waters. Recreational identified potential source coli. WWTPs shown to contribute presence these but other (yet unidentified) sources likely co-contribute.