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Journal of Clinical Microbiology, June 2001, p. 2298-2299, Vol. 39, No. 6
0095-1137/01/$04.00+0   DOI: 10.1128/JCM.39.6.2298-2299.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

High-Frequency Recovery of Quinupristin-Dalfopristin-Resistant Enterococcus faecium Isolates from the Poultry Production Environment

Joshua R. Hayes,1 Angela C. McIntosh,2 Sadaf Qaiyumi,2 Judith A. Johnson,2 Linda L. English,3 Lewis E. Carr,4 David D. Wagner,3 and Sam W. Joseph1,*

Department of Cell Biology and Molecular Genetics1 and Department of Biological Resources Engineering,4 University of Maryland, College Park, Maryland 20742; Veterans Affairs Maryland Health Care System, University of Maryland School of Medicine, Baltimore, Maryland 21201-15952; and Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, Maryland 207083

Received 6 November 2000/Returned for modification 1 February 2001/Accepted 27 March 2001

The occurrence of resistance to the streptogramin quinupristin-dalfopristin in Enterococcus faecium isolates from chickens on the Eastern Seaboard, was evaluated. Quinupristin-dalfopristin resistance was found in 51 to 78% of E. faecium isolates from the food production environment. The high level of resistance in this organism suggests that this reservoir of resistance may compromise the therapeutic potential of quinupristin-dalfopristin.

* Corresponding author. Mailing address: Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742. Phone: (301) 405-5452. Fax: (301) 314-9489. E-mail: sj13{at}umail.umd.edu.

Journal of Clinical Microbiology, June 2001, p. 2298-2299, Vol. 39, No. 6
0095-1137/01/$04.00+0   DOI: 10.1128/JCM.39.6.2298-2299.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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