ArticleApplied and environmental microbiology2006
Prevalence, persistence, and molecular characterization of glycopeptide-resistant enterococci in Norwegian poultry and poultry farmers 3 to 8 years after the ban on avoparcin.
Article in Applied and environmental microbiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.
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32 citing papers in PubMed, 1 synthesis or guideline pooled it, 97 citations in OpenAlex.
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- Investigating antibiotic resistance in enterococci in Gabonese livestock.Veterinary world · 2022Article
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- Role played by the environment in the emergence and spread of antimicrobial resistance (AMR) through the food chain.EFSA journal. European Food Safety Authority · 2021Article
- Setting the standard: multidisciplinary hallmarks for structural, equitable and tracked antibiotic policy.BMJ global health · 2020Review
- Enterococcus faecium: from microbiological insights to practical recommendations for infection control and diagnostics.Antimicrobial resistance and infection control · 2020Review
- Antibiotic Administration Routes and Oral Exposure to Antibiotic Resistant Bacteria as Key Drivers for Gut Microbiota Disruption and Resistome in Poultry.Frontiers in microbiology · 2020Article
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- Antimicrobial Resistance inMicrobiology spectrum · 2018Review
- Persistence of vancomycin resistance in multiple clones of Enterococcus faecium isolated from Danish broilers 15 years after the ban of avoparcin.Antimicrobial agents and chemotherapy · 2015Article
- Characterization of antibiotic resistance in commensal bacteria from an aquaculture ecosystem.Frontiers in microbiology · 2015Article
- Genetic variability of vancomycin-resistant Enterococcus faecium and Enterococcus faecalis isolates from humans, chickens, and pigs in Malaysia.Applied and environmental microbiology · 2013Article
- Reduced vancomycin susceptibility in porcine ST9 MRSA isolates.Frontiers in microbiology · 2013Article
- Microevolutionary events involving narrow host plasmids influences local fixation of vancomycin-resistance in Enterococcus populations.PloS one · 2013Article
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Environmental reservoirs of glycopeptide-resistant enterococci (GRE) in Norway have been linked to former growth promoting use of the glycopeptide avoparcin in poultry production. We have examined the prevalence of fecal GRE in poultry and poultry farmers 3 to 8 years after the Norwegian avoparcin ban in 1995 and performed molecular analyses of the GRE population. Fecal samples from poultry farmers and their flocks on 29 previously avoparcin-exposed farms were collected on five occasions during the study period (1998 to 2003). All flocks (100%) were GRE positive in 1998. Throughout the study period, 78.5% of the poultry samples were GRE positive. Glycopeptide-resistant Enterococcus faecium (GREF) was isolated from 27.6% of the farmer samples in 1998 and from 27.8% of the samples collected between 1998 and 2003. The prevalence of fecal GRE in poultry declined significantly during the study period, but prevalence in samples from the farmers did not decline. PCR analysis revealed a specific Tn1546-plasmid junction fragment in 93.9% of E. faecium isolates. A putative postsegregation killing (PSK) system linked to Tn1546 was detected in 97.1% of the isolates examined. Multilocus sequence typing of glycopeptide-susceptible (n = 10) and -resistant (n = 10) E. faecium isolates from humans (n = 10) and poultry (n = 10) on two farms displayed 17 different sequence types. The study confirms the continuing persistence of a widespread common plasmid-mediated vanA-pRE25-PSK element within a heterogeneous GRE population on Norwegian poultry farms 8 years after the avoparcin ban. Moreover, it suggests an important role of PSK systems in the maintenance of antimicrobial resistance determinants in reservoirs without apparent antimicrobial selection.
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