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Antimicrobial Agents and Chemotherapy, November 2007, p. 4177-4180, Vol. 51, No. 11
0066-4804/07/$08.00+0 doi:10.1128/AAC.00603-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.
Comparative Analysis of IncHI2 Plasmids Carrying blaCTX-M-2 or blaCTX-M-9 from Escherichia coli and Salmonella enterica Strains Isolated from Poultry and Humans
Aurora García Fernández,1
Axel Cloeckaert,2*
Alessia Bertini,1
Karine Praud,2
Benoît Doublet,2
François-Xavier Weill,3 and
Alessandra Carattoli1
Department of Infectious, Parasitic, Immune-Mediated Diseases, Istituto Superiore di Sanità, Rome, Italy,1
INRA, UR1282, Infectiologie Animale et Santé Publique, IASP, Nouzilly F-37380, France,2
Centre National de Référence des Salmonella, Unité de Biodiversité des Bactéries Pathogènes Emergentes, 28 rue du Docteur Roux, 75724 Paris cedex 15, France3
Received 8 May 2007/
Returned for modification 13 July 2007/
Accepted 3 August 2007
Salmonella enterica blaCTX-M-2 and blaCTX-M-9 plasmid backbones from isolates from Belgium and France were analyzed. The blaCTX-M-2-plasmids from both human and poultry isolates were related to the IncHI2 pAPEC-O1-R plasmid, previously identified in the United States in avian Escherichia coli strains; the blaCTX-M-9 plasmids were closely related to the IncHI2 R478 plasmid.
* Corresponding author. Mailing address: Unité 1282 Infectiologie Animale et Santé Publique site 213, Institut National de la Recherche Agronomique, 37380 Nouzilly, France. Phone: 33 2 47 42 77 50. Fax: 33 2 47 42 77 74. E-mail:
cloeckae{at}tours.inra.fr
Published ahead of print on 13 August 2007.
Antimicrobial Agents and Chemotherapy, November 2007, p. 4177-4180, Vol. 51, No. 11
0066-4804/07/$08.00+0 doi:10.1128/AAC.00603-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.
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