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Journal article

Persistence of Vancomycin Resistance in Multiple Clones of Enterococcus faecium Isolated from Danish Broilers 15 Years after the Ban of Avoparcin

By Bortolaia, Valeria1; Mander, Manuela1; Jensen, Lars Bogø2,3; Olsen, John E.1; Guardabassi, Luca1

From

University of Copenhagen1

National Food Institute, Technical University of Denmark2

Division of Food Microbiology, National Food Institute, Technical University of Denmark3

The occurrence and diversity of vancomycin-resistant Enterococcus faecium (VREF) were investigated in 100 Danish broiler flocks 15 years after the avoparcin ban. VREF occurred in 47 flocks at low fecal concentrations detectable only by selective enrichment. Vancomycin resistance was prevalently associated with a transferable nontypeable plasmid lineage occurring in multiple E. faecium clones.

Coselection of sequence type 842 by tetracycline use only partly explained the persistence of vancomycin resistance in the absence of detectable plasmid coresistance and toxin-antitoxin systems.

Language: English
Publisher: American Society for Microbiology
Year: 2015
Pages: 2926-2929
ISSN: 10986596 , 00664804 and 10706283
Types: Journal article
DOI: 10.1128/AAC.05072-14
ORCIDs: Jensen, Lars Bogø and 0000-0001-6225-6587
Keywords

Animals Anti-Bacterial Agents Chickens Enterococcus faecium Epidemiology and Surveillance Glycopeptides Plasmids Vancomycin Resistance avoparcin

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