ArticleApplied and environmental microbiology2008
Genotypic characterization and prevalence of virulence factors among Canadian Escherichia coli O157:H7 strains.
Article in Applied and environmental microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.
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Who cites it
34 citing papers in PubMed, 52 citations in OpenAlex.
- CommensalAnimals : an open access journal from MDPI · 2023Article
- Pathogenomes and variations in Shiga toxin production among geographically distinct clones ofMicrobial genomics · 2022Article
- Genome Sequences of 14 Escherichia coli O157:H7 Strains Isolated before and during the Time Frame of the 2018 Multistate Outbreak Associated with Romaine Lettuce.Microbiology resource announcements · 2020Article
- Epidemiology of Shiga Toxin-ProducingToxins · 2019Article
- Comparative genomics reveals structural and functional features specific to the genome of a foodborne Escherichia coli O157:H7.BMC genomics · 2019Article
- Bacteriophages Contribute to the Spread of Antibiotic Resistance Genes among Foodborne Pathogens of theFrontiers in microbiology · 2017Review
- Diversity of Survival Patterns among Escherichia coli O157:H7 Genotypes Subjected to Food-Related Stress Conditions.Frontiers in microbiology · 2016Article
- Utility of Whole-Genome Sequencing of Escherichia coli O157 for Outbreak Detection and Epidemiological Surveillance.Journal of clinical microbiology · 2015Article
- Escherichia coli O157:H7 strains harbor at least three distinct sequence types of Shiga toxin 2a-converting phages.BMC genomics · 2015Article
- Multilocus genotypic characterization of Escherichia coli O157:H7 recovered from food sources.Epidemiology and infection · 2015Article
- Geographically distinct Escherichia coli O157 isolates differ by lineage, Shiga toxin genotype, and total shiga toxin production.Journal of clinical microbiology · 2015Article
- Multilocus genotype analysis of Escherichia coli O157 isolates from Australia and the United States provides evidence of geographic divergence.Applied and environmental microbiology · 2013Article
- Molecular and antimicrobial susceptibility analyses distinguish clinical from bovine Escherichia coli O157 strains.Journal of clinical microbiology · 2013Article
- Characterization of Escherichia coli O157:H7 strains isolated from supershedding cattle.Applied and environmental microbiology · 2013Article
- Evolution of the Stx2-encoding prophage in persistent bovine Escherichia coli O157:H7 strains.Applied and environmental microbiology · 2013Article
- Characteristics of clinical Shiga toxin-producing Escherichia coli isolated from British Columbia.BioMed research international · 2013Article
- Enterohemorrhagic Escherichia coli O157:H7 Shiga toxins inhibit gamma interferon-mediated cellular activation.Infection and immunity · 2012Article
- Phylogenetically related Argentinean and Australian Escherichia coli O157 isolates are distinguished by virulence clades and alternative Shiga toxin 1 and 2 prophages.Applied and environmental microbiology · 2012Article
- Variation in stress resistance patterns among stx genotypes and genetic lineages of shiga toxin-producing Escherichia coli O157.Applied and environmental microbiology · 2012Article
- Genetic features differentiating bovine, food, and human isolates of shiga toxin-producing Escherichia coli O157 in The Netherlands.Journal of clinical microbiology · 2012Article
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Authors and funding
10 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this study, the association between genotypic and selected phenotypic characteristics was examined in a collection of Canadian Escherichia coli O157:H7 strains isolated from humans and cattle in the provinces of Alberta, Ontario, Saskatchewan, and Quebec. In a subset of 69 strains selected on the basis of specific phage types (PTs), a strong correlation between the lineage-specific polymorphism assay (LSPA6) genotype and PT was observed with all strains of PTs 4, 14, 21, 31, 33, and 87 belonging to the LSPA6 lineage I (LSPA6-LI) genotype, while those of PTs 23, 45, 67, and 74 belonged to LSPA6 lineage II (LSPA6-LII) genotypes. This correlation was maintained when additional strains of each PT were tested. E. coli O157:H7 strains with the LSPA6-LI genotype were much more common in the collection than were the LSPA6-LII or lineage I/II (LSPA6-LI/II)-related genotypes (82.6, 11.2, and 5.8%, respectively). Of the strains tested, proportionately more LSPA6-LI than LSPA6-LII genotype strains were isolated from humans (52.7% versus 19.7%) than from cattle (47.8% versus 80.2%). In addition, 96.7% of the LSPA6-LII strains carried the stx(2c) variant gene, while only 50.0% of LSPA6-LI/II and 2.7% of LSPA6-LI strains carried this gene. LSPA6-LII strains were also significantly more likely to possess the colicin D gene, cda (50.8% versus 23.2%), and have combined resistance to streptomycin, sulfisoxazole, and tetracycline (72.1% versus 0.9%) than were LSPA6-LI strains. The LSPA6 genotype- and PT-related characteristics identified may be important markers of specific ecotypes of E. coli O157:H7 that have unique epidemiological and virulence characteristics.
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