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Journal of Clinical Microbiology, June 2001, p. 2287-2290, Vol. 39, No. 6
0095-1137/01/$04.00+0   DOI: 10.1128/JCM.39.6.2287-2290.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Reemergence of Gentamicin-Susceptible Strains of Methicillin-Resistant Staphylococcus aureus in France: a Phylogenetic Approach

D. S. Blanc,1,* P. Francioli,1 A. Le Coustumier,2 L. Gazagne,3 E. Lecaillon,3 P. Gueudet,3 F. Vandenesch,4 and J. Etienne4

CHU Vaudois, Lausanne, Switzerland,1 and Hôpital Champ le Roi, Neufchateau,2 CH Maréchal Joffre, Perpignan,3 and Centre national de référence des Toxémies à Staphylocoques, Lyon,4 France

Received 4 December 2000/Returned for modification 1 February 2001/Accepted 27 March 2001

The reemergence of gentamicin-susceptible (Gens) methicillin-resistant Staphylococcus aureus (MRSA) isolates in France between 1992 and 1996 was investigated using a phylogenetic approach (multiprimer randomly amplified polymorphic DNA typing). Eighty-six percent (65 of 85) of the French strains were grouped into one phylogenetic cluster within which all but one Gens strain were grouped into a subcluster. Thus, the reemergence of Gens MRSA strains in France was likely due to the spread of one specific clone which belonged to a cluster comprising most French gentamicin-resistant (Genr) strains. This suggests that the Gens clone has emerged from a Genr strain of this cluster.


* Corresponding author. Mailing address: Division autonome de médecine préventive hospitalière, Centre Hospitalier Universitaire Vaudois, 1011 Lausanne, Switzerland. Phone: 41 21 314 02 60. Fax: 41 21 314 02 62. E-mail: Dominique.Blanc{at}chuv.hospvd.ch.


Journal of Clinical Microbiology, June 2001, p. 2287-2290, Vol. 39, No. 6
0095-1137/01/$04.00+0   DOI: 10.1128/JCM.39.6.2287-2290.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.



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