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Applied and Environmental Microbiology, May 2005, p. 2766-2770, Vol. 71, No. 5
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.5.2766-2770.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Molecular Analysis of Human, Porcine, and Poultry Enterococcus faecium Isolates and Their erm(B) Genes

E. De Leener,1* A. Martel,1 E. M. De Graef,1 J. Top,2 P. Butaye,3 F. Haesebrouck,1 R. Willems,2 and A. Decostere1

Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, B-9820 Merelbeke, Belgium,1 Eijkman-Winkler Institute for Microbiology, Infectious Diseases and Inflammation, Utrecht, The Netherlands,2 CODA-CERVA-VAR, B-1180 Brussels, Belgium3

Received 13 September 2004/ Accepted 24 November 2004

Fifty-nine erm(B)-positive Enterococcus faecium strains isolated from pigs, broilers, and humans were typed using multilocus sequence typing (MLST), and the coding sequence of the erm(B) gene was determined. Identical erm(B) gene sequences were detected in genetically unrelated isolates. Furthermore, genetically indistinguishable strains were found to contain different erm(B) alleles. This may suggest that horizontal exchange of the erm(B) gene between animal and human E. faecium strains or the existence of a common reservoir of erm(B) genes might be more important than direct transmission of resistant strains.

* Corresponding author. Mailing address: Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium. Phone: 32-9-2647376. Fax: 32-9-2647494. E-mail: ellen.deleener{at}UGent.be.

Applied and Environmental Microbiology, May 2005, p. 2766-2770, Vol. 71, No. 5
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.5.2766-2770.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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