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Applied and Environmental Microbiology, August 2002, p. 4148-4152, Vol. 68, No. 8
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.8.4148-4152.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Horizontal Transmission of Shiga Toxin-Producing Escherichia coli within Groups of Dairy Calves

R. Cobbold1* and P. Desmarchelier2

Department of Microbiology, University of Queensland, St. Lucia, Queensland 4072,1 Food Science Australia, Tingalpa DC, Queensland 4173, Australia2

Received 1 February 2002/ Accepted 30 May 2002

To examine the dissemination of Shiga-toxigenic Escherichia coli (STEC) within cattle groups, dairy calves on two farms utilizing different calf-rearing practices were exposed to a traceable STEC strain. Test strain dissemination differed significantly between farms, with a higher prevalence being associated with group penning. Pen floors and calf hides may be the main environmental mechanisms of transmission. Dairy calf husbandry represents a control point for reducing on-farm STEC prevalence.

* Corresponding author. Present address: Field Disease Investigation Unit, Department of Veterinary Clinical Studies, Washington State University, WA 99164-6610. Phone: (509) 335-0729. Fax: (509) 335-0880. E-mail: cobbold{at}vetmed.wsu.edu.

Applied and Environmental Microbiology, August 2002, p. 4148-4152, Vol. 68, No. 8
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.8.4148-4152.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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Copyright © 2002 by the American Society for Microbiology. All rights reserved.