ArticleJournal of clinical microbiology2013
Evaluation of a new chromogenic agar medium for detection of Shiga toxin-producing Escherichia coli (STEC) and relative prevalences of O157 and non-O157 STEC in Manitoba, Canada.
Article in Journal of clinical microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 29 citations in OpenAlex.
- Modeling the effect of the number of presumptive colonies selected from agar plate on the recovery and prevalence ofFrontiers in microbiology · 2026Article
- Article
- Epidemiology of Non-O157 Shiga Toxin-ProducingMicroorganisms · 2022Article
- Evaluation of chromogenic selective agar (CHROMagar STEC) for the direct detection of Shiga toxin-producingJournal of medical microbiology · 2020Article
- High prevalence of non-O157 Shiga toxin-producing Escherichia coli in beef cattle detected by combining four selective agars.BMC microbiology · 2019Article
- Prevalence and concentration of stx+ E. coli and E. coli O157 in bovine manure from Florida farms.PloS one · 2019Article
- A Decade of Development of Chromogenic Culture Media for Clinical Microbiology in an Era of Molecular Diagnostics.Clinical microbiology reviews · 2017Review
- Development of a real-time PCR assay and comparison to CHROMagarAfrican journal of laboratory medicine · 2017Article
- Shiga Toxin-Producing Escherichia coli in Diarrheal Stool of Swedish Children: Evaluation of Polymerase Chain Reaction Screening and Duration of Shiga Toxin Shedding.Journal of the Pediatric Infectious Diseases Society · 2016Article
- Detection, Characterization, and Typing of Shiga Toxin-Producing Escherichia coli.Frontiers in microbiology · 2016Review
- Comparison of Six Chromogenic Agar Media for the Isolation of a Broad Variety of Non-O157 Shigatoxin-Producing Escherichia coli (STEC) Serogroups.International journal of environmental research and public health · 2015Article
- Assessing the public health risk of Shiga toxin-producing Escherichia coli by use of a rapid diagnostic screening algorithm.Journal of clinical microbiology · 2015Article
- Shiga toxin-producing E. coli (STEC) in swine: prevalence over the finishing period and characteristics of the STEC isolates.Epidemiology and infection · 2015Article
- Light scattering sensor for direct identification of colonies of Escherichia coli serogroups O26, O45, O103, O111, O121, O145 and O157.PloS one · 2014Article
- Molecular and antimicrobial susceptibility analyses distinguish clinical from bovine Escherichia coli O157 strains.Journal of clinical microbiology · 2013Article
- Evaluation of CHROMagar STEC and STEC O104 chromogenic agar media for detection of Shiga Toxin-producing Escherichia coli in stool specimens.Journal of clinical microbiology · 2013Article
- Shiga toxin-producing Escherichia coli O157 is more likely to lead to hospitalization and death than non-O157 serogroups--except O104.PloS one · 2013Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study assesses the detection performance of CHROMagar STEC medium relative to a reference cytotoxin assay and describes the current relative prevalence of O157 and non-O157 Shiga toxin-producing Escherichia coli (STEC) serotypes within the province of Manitoba, Canada. Over a 10-month period, 205 nonfrozen routine stool submissions to Cadham Provincial Laboratory (CPL) were used to assess the performance of CHROMagar STEC. Of the 205 stools, 14 were identified as true positives by a cytotoxin assay, with resultant CHROMagar STEC sensitivity, specificity, and positive predictive and negative predictive values of 85.7%, 95.8%, 60.0%, and 98.9%, respectively. Using a separate panel of 111 STEC strains, CHROMagar STEC was shown to support the growth of 96 (86.5%) isolates. To assess relative prevalence, attempts were made to isolate by any means all STEC strains identified at CPL over a 17-month period. Of 49 isolates (representing 86.0% of all STEC infections detected), only 28.6% were O157 STEC strains. Of the 35 non-O157 STEC strains, 29 were subjected to further molecular analysis. In contrast to earlier results from our area, carriage of stx(2) appears to have increased. Overall, although CHROMagar STEC is not recommended as a primary screen, our results indicate that it is an effective supplemental medium for the isolation of probable STEC strains. Increased isolation of these serotypes is warranted to better understand their prevalence, clinical characteristics, and epidemiology and aid in the development or enhancement of food safety control programs targeting all STEC serotypes.
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