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Journal of Clinical Microbiology, August 2007, p. 2723-2725, Vol. 45, No. 8
0095-1137/07/$08.00+0 doi:10.1128/JCM.00015-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.
Evaluation of Methods To Identify the Klebsiella pneumoniae Carbapenemase in Enterobacteriaceae
K. F. Anderson,*
D. R. Lonsway,
J. K. Rasheed,
J. Biddle,
B. Jensen,
L. K. McDougal,
R. B. Carey,
A. Thompson,
S. Stocker,
B. Limbago, and
J. B. Patel
Centers for Disease Control and Prevention, Division of Healthcare Quality Promotion, Atlanta, Georgia
Received 3 January 2007/
Returned for modification 13 February 2007/
Accepted 6 June 2007
The Klebsiella pneumoniae carbapenem (KPC) ß-lactamase occurs in Enterobacteriaceae and can confer resistance to all ß-lactam agents including carbapenems. The enzyme may confer low-level carbapenem resistance, and the failure of susceptibility methods to identify this resistance has been reported. Automated and nonautomated methods for carbapenem susceptibility were evaluated for identification of KPC-mediated resistance. Ertapenem was a more sensitive indicator of KPC resistance than meropenem and imipenem independently of the method used. Carbapenemase production could be confirmed with the modified Hodge test.
* Corresponding author. Mailing address: Centers for Disease Control and Prevention, Mail Stop G-08, 1600 Clifton Road NE, Atlanta, GA 30333. Phone: (404) 639-2824. Fax: (404) 639-1381. E-mail: ebi2{at}cdc.gov
Published ahead of print on 20 June 2007.
Journal of Clinical Microbiology, August 2007, p. 2723-2725, Vol. 45, No. 8
0095-1137/07/$08.00+0 doi:10.1128/JCM.00015-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.
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Copyright © 2007 by the American Society for Microbiology. All rights reserved.