CTX-M and SHV-12 β-lactamases are the most common extended-spectrum enzymes in clinical isolates ofEscherichia coliandKlebsiella pneumoniaecollected from 3 university hospitals within Korea

Abstract excerpt

Among the 443 clinical isolates of Escherichia coli and Klebsiella spp. collected between June and November 2003 from 3 university hospitals in Korea, 62 isolates were confirmed as extended-spectrum beta-lactamase (ESBL)- or plasmid-mediated AmpC beta-lactamase-producers by double disk synergy test, PCR and sequencing for beta-lactamase genes. The most frequently identified ESBL gene among E. coli and K....

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