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Antimicrobial Agents and Chemotherapy, February 2005, p. 833-835, Vol. 49, No. 2
0066-4804/05/$08.00+0     doi:10.1128/AAC.49.2.833-835.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Extended-Spectrum ß-Lactamases in Escherichia coli Isolated from Dogs and Cats in Rome, Italy, from 2001 to 2003

Istituto Superiore di Sanità,² Istituto Zooprofilattico Sperimentale delle Regioni Lazio e Toscana, Rome, Italy¹

Received 23 July 2004/ Returned for modification 6 September 2004/ Accepted 12 October 2004

We report expanded-spectrum cephalosporin resistance in Escherichia coli from dogs and cats in Rome, Italy. Three major ß-lactamases (CMY-2, SHV-12, and CTX-M-1) are reported for the first time in E. coli from sick and healthy dogs and cats. Molecular characterization suggests the presence of several combinations of ß-lactamase genes in E. coli from companion animals.

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