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Applied and Environmental Microbiology, December 2002, p. 6439-6445, Vol. 68, No. 12
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.12.6439-6445.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Virulence Properties and Serotypes of Shiga Toxin-Producing Escherichia coli from Healthy Australian Cattle

Michael A. Hornitzky,1* Barbara A. Vanselow,2 Keith Walker,1 Karl A. Bettelheim,3 Bruce Corney,4 Paul Gill,5 Graham Bailey,6 and Steven P. Djordjevic1

Elizabeth Macarthur Agricultural Institute, New South Wales Agriculture, Camden, New South Wales 2570,1 New South Wales Agriculture Beef Industry Centre, UNE, Armidale, New South Wales 2351,2 Microbiological Diagnostic Unit, Department of Microbiology and Immunology, University of Melbourne, Parkville, Victoria 3052,3 Animal Research Institute, Animal and Plant Health Service, Queensland Department of Primary Industries, Yeerongpilly, Queensland 4015,4 Regional Veterinary Laboratory, New South Wales Agriculture, Wollongbar, New South Wales 2477,5 Regional Veterinary Laboratory, New South Wales Agriculture, Orange, New South Wales 2800, Australia6

Received 26 February 2002/ Accepted 23 September 2002

The virulence properties and serotypes of complex Shiga toxin-producing Escherichia coli (cSTEC) were determined in two studies of healthy cattle in eastern Australia. In the first, a snapshot study, 84 cSTEC isolates were recovered from 37 of 1,692 (2.2%) fecal samples collected from slaughter-age cattle from 72 commercial properties. The second, a longitudinal study of three feedlots and five pasture beef properties, resulted in the recovery of 118 cSTEC isolates from 104 animals. Of the 70 serotypes identified, 38 had not previously been reported.


* Corresponding author. Mailing address: Elizabeth Macarthur Agricultural Institute, New South Wales Agriculture, PMB 8, Camden, NSW 2570, Australia. Phone: 0061-246-406311. Fax: 0061-246-406400. E-mail: michael.hornitzky{at}agric.nsw.gov.au.


Applied and Environmental Microbiology, December 2002, p. 6439-6445, Vol. 68, No. 12
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.12.6439-6445.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.




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