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Applied and Environmental Microbiology, April 2007, p. 2373-2377, Vol. 73, No. 7
0099-2240/07/$08.00+0     doi:10.1128/AEM.02341-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Detection and Identification by PCR of a Highly Virulent Phylogenetic Subgroup among Extraintestinal Pathogenic Escherichia coli B2 Strains{triangledown}

Philippe Bidet,1 Arnaud Metais,2 Farah Mahjoub-Messai,1 Lionel Durand,2 Marie Dehem,3 Yannick Aujard,4 Edouard Bingen,1* Xavier Nassif,2 and Stéphane Bonacorsi1

Laboratoire d'Études de Génétique Bactérienne dans les Infections de l'Enfant (EA3105), Université Denis Diderot-Paris 7, Service de Microbiologie,1 Service de Néonatologie, Hôpital Robert Debré, Assistance Publique-Hôpitaux de Paris (Ap-Hp), ParisFrance;,4 INSERM U570, Faculté de Médecine Necker-Enfants Malades, Université René Descartes-Paris 5, Paris, France,2 Genoscreen, Lille, France3

Received 4 October 2006/ Accepted 27 January 2007

Closely related Escherichia coli B2 strains O1:K1, O2:K1, O18:K1, and O45:K1 constitute a major subgroup causing extraintestinal infections. A DNA pathoarray analysis was used to develop a PCR specific for this subgroup that was included in the multiplex phylogenetic-grouping PCR method. Our PCR may serve to identify this virulent subgroup among different ecological niches.

* Corresponding author. Mailing address: Service de Microbiologie, Hôpital Robert Debré, 48 Bd Sérurier, 75395 Paris cedex 19, France. Phone: 33 1 40 03 23 40. Fax: 33 1 40 03 24 50. E-mail: edouard.bingen{at}rdb.ap-hop-paris.fr.

{triangledown} Published ahead of print on 9 February 2007.

Applied and Environmental Microbiology, April 2007, p. 2373-2377, Vol. 73, No. 7
0099-2240/07/$08.00+0     doi:10.1128/AEM.02341-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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