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Journal of Clinical Microbiology, June 2005, p. 2916-2919, Vol. 43, No. 6
0095-1137/05/$08.00+0     doi:10.1128/JCM.43.6.2916-2919.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Surveillance of Staphylococcus aureus in Veterinary Teaching Hospitals

Department of Veterinary Medicine and Surgery,¹ Veterinary Medical Diagnostic Laboratory, University of Missouri, Columbia, Missouri 65211,² Washington Animal Disease Diagnostic Laboratory, Washington State University, Pullman, Washington 99164,³ State Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, Georgia,⁴ Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, Iowa,⁵ Purdue University School of Veterinary Medicine, West Lafayette, Indiana,⁶ University of Illinois, Champagne-Urbana, Illinois,⁷ Oklahoma State University, Stillwater, Oklahoma,⁸ University of Wisconsin, Madison, Wisconsin⁹

Received 10 December 2004/ Returned for modification 23 January 2005/ Accepted 6 February 2005

Staphylococcus aureus isolates (n = 70) from 65 patients (36 canine, 18 equine, 7 bovine, 2 avian, and 2 feline) at seven veterinary teaching hospitals in the United States were studied. The majority of patients (83%) with an S. aureus infection were canine and equine, but this may have reflected a sample bias based on clinic case loads and diagnostic lab submissions at the participating institutions. Fourteen percent of patients with an S. aureus infection were infected with a methicillin-resistant S. aureus (MRSA) isolate. Six of seven institutions had at least one MRSA infection during the study. Pulsed-field gel electrophoresis on 63 of the 70 isolates yielded 58 unique strains of S. aureus. None of the strain types of the MRSA isolates matched each other or the type of any other S. aureus isolate. The proportions of patients infected with an MRSA isolate were not significantly different between institutions or animal species (P 0.222). Methicillin-resistant S. aureus isolates in this study seemed to be community acquired rather than hospital acquired.

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