ArticleWater research2010
Large scale analysis of virulence genes in Escherichia coli strains isolated from Avalon Bay, CA.
Article in Water research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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Who cites it
32 citing papers in PubMed, 64 citations in OpenAlex.
- Characterization of non-O157 enterohemorrhagic Escherichia coli isolated from different sources in Egypt.BMC microbiology · 2024Article
- Prevalence, antimicrobial resistance and detection of virulence genes of Escherichia coli and Salmonella spp. isolated from white-lipped peccaries and collared peccaries.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024Article
- Quantitative microbial risk assessment of gastrointestinal illness due to recreational exposure toHeliyon · 2024Article
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- Microbiological quality assessment of fresh produce: Potential health risk to children and urgent need for improved food safety in school feeding schemes.Food science & nutrition · 2023Article
- Whole-Genome Sequencing and Virulome Analysis of Escherichia coli Isolated from New Zealand Environments of Contrasting Observed Land Use.Applied and environmental microbiology · 2022Article
- Molecular Epidemiology of Antibiotic Resistance Genes and Virulence Factors in Multidrug-ResistantInternational journal of environmental research and public health · 2022Article
- Is It Human or Animal? The Origin of PathogenicTropical medicine and infectious disease · 2021Article
- Niche Preference ofLife (Basel, Switzerland) · 2021Article
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- Landscape, Water Quality, and Weather Factors Associated With an Increased Likelihood of Foodborne Pathogen Contamination of New York Streams Used to Source Water for Produce Production.Frontiers in sustainable food systems · 2020Article
- Marine bacterial communities in the upper gulf of Thailand assessed by Illumina next-generation sequencing platform.BMC microbiology · 2020Article
- Virulence-associated traits and in vitro biofilm-forming ability of Escherichia coli isolated from a major river traversing Northern India.Environmental science and pollution research international · 2019Article
- Antibiotic-Resistant Pathogenic Escherichia Coli Isolated from Rooftop Rainwater-Harvesting Tanks in the Eastern Cape, South Africa.International journal of environmental research and public health · 2018Article
- High-ThroughputFrontiers in microbiology · 2018Article
- Phylogenetic Backgrounds and Virulence-Associated Traits of Escherichia coli Isolates from Surface Waters and Diverse Animals in Minnesota and Wisconsin.Applied and environmental microbiology · 2017Article
- Prevalence of Virulence Genes Associated with Diarrheagenic Pathotypes ofInternational journal of microbiology · 2017Article
- Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case.Journal of environmental health science & engineering · 2017Article
- Occurrence of virulence gene signatures associated with diarrhoeagenic and non-diarrhoeagenic pathovars of Escherichia coli isolates from some selected rivers in South-Western Nigeria.BMC microbiology · 2015Article
- Prevalence and Characterization of Shiga Toxin-Producing and Enteropathogenic Escherichia coli in Shellfish-Harvesting Areas and Their Watersheds.Frontiers in microbiology · 2015Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
Contamination of recreational waters with Escherichia coli and Enterococcus sp. is a widespread problem resulting in beach closures and loss of recreational activity. While E. coli is frequently used as an indicator of fecal contamination, and has been extensively measured in waterways, few studies have examined the presence of potentially pathogenic E. coli strains in beach waters. In this study, a combination of high-throughput, robot-assisted colony hybridization and PCR-based analyses were used to determine the genomic composition and frequency of virulence genes present in E. coli isolated from beach water in Avalon Bay, Santa Catalina Island, CA. A total of 24,493 E. coli isolates were collected from two sites at a popular swimming beach between August through September 2007 and from July through August 2008. All isolates were examined for the presence of shiga-like toxins (stx1/stx2), intimin (eaeA), and enterotoxins (ST/LT). Of the 24,493 isolates examined, 3.6% contained the eaeA gene, indicating that these isolates were potential EPEC strains. On five dates, however, greater than 10% of the strains were potential EPEC, suggesting that incidence of virulence genes at this beach has a strong temporal component. No STEC or ETEC isolates were detected, and only eight (<1.0%) of the potential EPEC isolates were found to carry the EAF plasmid. The potential EPEC isolates mainly belonged to E. coli phylogenetic groups B1 or B2, and carried the β intimin subtype. DNA fingerprint analyses of the potential EPEC strains indicated that the isolates belonged to several genetically diverse groups, although clonal isolates were frequently detected. While the presence of virulence genes alone cannot be used to determine the pathogenicity of strains, results from this study show that potential EPEC strains can be found in marine beach water and their presence needs to be considered as one of the factors used in decisions concerning beach closures.
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Registered trials
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