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. 2009 Aug;53(8):3280-4.
doi: 10.1128/AAC.00426-09. Epub 2009 Jun 8.

Emergence of high levels of extended-spectrum-beta-lactamase-producing gram-negative bacilli in the Asia-Pacific region: data from the Study for Monitoring Antimicrobial Resistance Trends (SMART) program, 2007

Stephen P Hawser  1 , Samuel K Bouchillon, Daryl J Hoban, Robert E Badal, Po-Ren Hsueh, David L Paterson
Affiliations

Emergence of high levels of extended-spectrum-beta-lactamase-producing gram-negative bacilli in the Asia-Pacific region: data from the Study for Monitoring Antimicrobial Resistance Trends (SMART) program, 2007

Stephen P Hawser et al. Antimicrob Agents Chemother. 2009 Aug.

Abstract

Of 3,004 gram-negative bacilli collected from intra-abdominal infections in the Asia-Pacific region during 2007, 42.2% and 35.8% of Escherichia coli and Klebsiella spp., respectively, were extended-spectrum beta-lactamase (ESBL) positive. Moreover ESBL rates in India for E. coli, Klebsiella pneumoniae, and Klebsiella oxytoca were 79.0%, 69.4%, and 100%, respectively. ESBL-positive E. coli rates were also relatively high in China (55.0%) and Thailand (50.8%). Ertapenem and imipenem were the most active drugs tested, inhibiting over 90% of all species, including ESBL-positive isolates with the exception of Pseudomonas aeruginosa isolates (<90% susceptible to all study drugs) and ESBL-positive Klebsiella pneumoniae isolates (<90% susceptible to all study drugs except imipenem). Quinolones achieved 90% inhibition levels only against ESBL-negative K. pneumoniae and ESBL-negative K. oxytoca. A decline in ampicillin-sulbactam activity was noted, with only 34.5% of all Enterobacteriaceae inhibited in this study.

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Figures

FIG. 1.
FIG. 1.
Frequency distribution of ESBL-positive isolates by country in the Asia-Pacific (AP) region during 2007. Korea refers to South Korea.
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