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Antimicrobial Agents and Chemotherapy, April 2002, p. 1128-1131, Vol. 46, No. 4
0066-4804/02/$04.00+0     DOI: 10.1128/AAC.46.4.1128-1131.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

TEM Derivative-Producing Enterobacter aerogenes Strains: Dissemination of a Prevalent Clone

P. Dumarche, C. De Champs,* D. Sirot, C. Chanal, R. Bonnet, and J. Sirot

Faculté de Médecine, Laboratoire de Bactériologie, 63001 Clermont-Ferrand Cedex, France

Received 30 April 2001/ Returned for modification 21 September 2001/ Accepted 13 January 2002

TEM-24 (CAZ-6) extended-spectrum ß-lactamase (ESBL) was detected in 1988 in Clermont-Ferrand, France, in Klebsiella pneumoniae (blaTEM-24) and Enterobacter aerogenes (blaTEM-24b), and since 1994, a TEM-24-producing E. aerogenes clonal strain has been observed elsewhere in the country. To determine if the spread of this clonal strain was restricted to TEM-24-producing E. aerogenes strains, 84 E. aerogenes strains (non-TEM/SHV-producing strains, TEM-1- or -2-producing strains, and different ESBL-producing strains), isolated from 1988 to 1999 in Clermont-Ferrand (n = 59) and in 11 other French hospitals in 1998 (n = 25), were studied. A clonal strain was found for TEM-24- but also for TEM-3- and TEM-1- or 2-producing isolates. This study shows that there is a clonal strain dependent on acquisition of the TEM-type enzyme (TEM-24 and other TEM types).

* Corresponding author. Mailing address: Faculté de Médecine, Service de Bactériologie, 28 Place Henri-Dunant, 63001 Clermont-Ferrand Cedex, France. Phone: 33 4 73 17 81 50/53. Fax: 33 4 73 27 74 94. E-mail: Christophe.DECHAMPS{at}u-clermont1.fr.

Antimicrobial Agents and Chemotherapy, April 2002, p. 1128-1131, Vol. 46, No. 4
0066-4804/02/$04.00+0     DOI: 10.1128/AAC.46.4.1128-1131.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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