ArticlePoultry science2020
Characteristics of linezolid-resistant Enterococcus faecalis isolates from broiler breeder farms.
Article in Poultry science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 21 citations in OpenAlex.
- Epidemiological and Genomic Insights into Linezolid-Non-Susceptible Enterococci in Pediatric Patients.Current microbiology · 2026Article
- Linezolid-resistant Enterococcus faecium clinical isolates from Pakistan: a genomic analysis.BMC microbiology · 2024Article
- Occurrence of Antimicrobial-ResistantAntibiotics (Basel, Switzerland) · 2024Article
- Prevalence and Associated Factors ofAntibiotics (Basel, Switzerland) · 2023Article
- Antibiotic Resistance among Gastrointestinal Bacteria in Broilers: A Review Focused onAnimals : an open access journal from MDPI · 2023Review
- Prevalence and antimicrobial resistance patterns ofJAC-antimicrobial resistance · 2022Article
- Resistance towards Critically Important Antimicrobials amongAntibiotics (Basel, Switzerland) · 2022Article
- Antimicrobial Resistance, Biofilm Formation, and Virulence Genes inAntibiotics (Basel, Switzerland) · 2022Article
- Molecular Characteristics ofAnimals : an open access journal from MDPI · 2021Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Linezolid is an oxazolidinone class antibiotic used for treatment infections caused by various multidrug-resistant gram-positive pathogens including enterococci. However, recently, linezolid-resistant isolates in animals are considered as a human health hazard. In a broiler operation system, antimicrobial resistance can be transferred to the environment and commercial broiler via the fecal-oral route. Therefore, this study was conducted to investigate the prevalence and characteristics of linezolid-resistant Enterococcus faecalis (E. faecalis) from broiler parent stock in a broiler operation system. Among 297 E. faecalis isolates from 85 flocks in 8 broiler breeder farms, the prevalence of chloramphenicol- and linezolid-resistant isolates was 0 to 12.1% and 0 to 8.0%, respectively; however, there were no significant differences between farms. Therefore, a total of 14 (4.7%) chloramphenicol- and/or linezolid-resistant E. faecalis showed resistance to 7 or more antimicrobial classes. The drug-resistance gene optrA, which can confer resistance to linezolid, tedizolid, and phenicols, was found in 8 (2.69%) isolates, and 7 (2.36%) of the 8 optrA-positive isolates co-carried the phenicol exporter gene fexA. However, E. faecalis isolates from 3 of 8 broiler breeder farms only carried the optrA and/or fexA genes. As linezolid is one of the last antimicrobial treatments of choice for multidrug-resistant gram-positive pathogens including E. faecalis, the presence of antibiotic-resistant E. faecalis in broiler breeder farms should be monitored to prevent the introduction of linezolid-resistant strains to the food chain.
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