Molecular Characteristics of Extended-Spectrum-β-Lactamase-Producing <i>Escherichia coli</i> Isolates Causing Bacteremia in the Calgary Health Region from 2000 to 2007: Emergence of Clone ST131 as a Cause of Community-Acquired Infections

Abstract excerpt

A study was designed to characterize extended-spectrum-beta-lactamase (ESBL)-producing Escherichia coli isolates causing bacteremia over an 8-year period (2000 to 2007) in a large well-defined geographical region. Molecular characterization was done by using isoelectric focusing; PCR; and sequencing of the bla(CTX-M)-, bla(TEM)-, bla(OXA)-, bla(SHV)-, and plasmid-mediated quinolone resistance determinants....

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