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2010•Antimicrobial Agents and ChemotherapyOpen access

Antimicrobial Resistance Testing of Verocytotoxin-Producing Escherichia coli and First Description of TEM-52 Extended-Spectrum β-Lactamase in Serogroup O26

Glenn Buvens, Pierre Bogaerts, Youri Glupczynski, Sabine Lauwers, Denis Piérard

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Abstract

We have investigated the antimicrobial resistance of verocytotoxin-producing Escherichia coli (VTEC) strains isolated from humans, animals, food, and the environment in Belgium. Resistance was more frequent in non-O157 strains from humans than in O157 strains from humans or other sources, and among non-O157 VTEC strains, intimin-positive strains were more resistant than intimin-negative strains. We also report the first VTEC strain producing an IncI1 extended-spectrum β-lactamase encoded by plasmid-borne bla(TEM-52); this β-lactamase was previously associated with Salmonella enterica and E. coli isolates from different origins.

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What this paper is about

We have investigated the antimicrobial resistance of verocytotoxin-producing Escherichia coli (VTEC) strains isolated from humans, animals, food, and the environment in Belgium. Resistance was more frequent in non-O157 strains from humans than in O157 strains from humans or other sources, and among non-O157 VTEC strains, intimin-positive strains were more resistant than intimin-negative strains. We also report the first VTEC strain producing an IncI1 extended-spectrum β-lactamase encoded by plasmid-borne bla(TEM-52); this β-lactamase was previously associated with Salmonella enterica and E. coli isolates from different origins.

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Available abstract

We have investigated the antimicrobial resistance of verocytotoxin-producing Escherichia coli (VTEC) strains isolated from humans, animals, food, and the environment in Belgium. Resistance was more frequent in non-O157 strains from humans than in O157 strains from humans or other sources, and among non-O157 VTEC strains, intimin-positive strains were more resistant than intimin-negative strains. We also report the first VTEC strain producing an IncI1 extended-spectrum β-lactamase encoded by plasmid-borne bla(TEM-52); this β-lactamase was previously associated with Salmonella enterica and E. coli isolates from different origins.

Key concepts: Verocytotoxin, VTEC, Intimin, Escherichia coli, Microbiology, Salmonella enterica, Antimicrobial, Biology

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Antimicrobial Resistance Testing of Verocytotoxin-Producing Escherichia coli and First Description of TEM-52 Extended-Spectrum β-Lactamase in Serogroup O26 — Research Paper | ScholarLens