ArticleEpidemiology and infection2017
Different Escherichia coli B2-ST131 clades (B and C) producing extended-spectrum β-lactamases (ESBL) colonizing residents of Portuguese nursing homes.
Article in Epidemiology and infection, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 15 citations in OpenAlex.
- Transmission dynamics of Escherichia coli sequence type 131 in households-a one health prospective cohort study.Nature communications · 2025Article
- Occurrence of Healthcare-Associated Infections (HAIs) byPathogens (Basel, Switzerland) · 2022Article
- Characterization of ESBL-ProducingMicroorganisms · 2021Article
- Prevalence and Risk Factors for Multidrug-Resistant Organisms Colonization in Long-Term Care Facilities Around the World: A Review.Antibiotics (Basel, Switzerland) · 2021Review
- Colistin-ResistantFrontiers in microbiology · 2021Article
- Characterization of Integrons and Antimicrobial Resistance inThe Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2020Article
- Clonal ST131-Microbial genomics · 2019Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
ESBL-producing Enterobacteriaceae and particularly Escherichia coli ST131 isolates producing CTX-M enzymes are commonly found colonizing the intestine of nursing home (NH) residents, but ST131 subclonal structure has been scarcely explored in this vulnerable population. Our goal was to perform a pilot study to assess the faecal carriage rate and epidemiological features of ESBL- and/or carbapenemase-producing Enterobacteriaceae (ESBL-E and CPE, respectively) among NH residents. For this purpose, faecal samples from residents at 4 different NHs in the North of Portugal (representing 9·5% of the residents' population, July 2014) were screened for ESBL-E and/or CPE by phenotypic and genotypic methods. Clonal structure and plasmid typing of ESBL-producing E. coli (ESBL-Ec) was performed by PCR and sequencing. Four ESBL-Ec isolates (2 CTX-M-15/2 CTX-M-14) were found in 20% of the samples, all belonging to the pandemic clonal lineage B2-ST131-O25b:H4. Two different clades were identified, the C2/H30-Rx-virotype C producing CTX-M-15 and an atypical B/H22-like-virotype D5 (producing CTX-M-14 and fluoroquinolone-resistant), firstly described in Portugal. This pilot study highlights the role of NH residents as a source of different ST131 clades, besides emphasizing the importance of E. coli B2-ST131 subtyping in different clinical settings, and understanding the transmission dynamics of the different variants.
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