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First Detection of CTX-M and SHV Extended-Spectrum β-Lactamases in Escherichia coli Urinary Tract Isolates from Dogs and Cats in the United States▿

By Alexandra O'Keefe, Tabitha A. Hutton, Dieter M. Schifferli and Shelley C. Rankin


One hundred fifty canine and feline Escherichia coli isolates associated with urinary tract infections were screened for the presence of extended-spectrum β-lactamase (ESBL) genes. Out of 60 isolates suspected to be ESBL positive based on antimicrobial susceptibility testing, 11 ESBLs were identified, including one SHV-12 gene, one CTX-M-14 gene, and nine CTX-M-15 genes. This study provides the first report of CTX-M- and SHV-type ESBLs in dogs and cats in the United States

Topics: Mechanisms of Resistance
Publisher: American Society for Microbiology (ASM)
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Provided by: PubMed Central
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