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Journal of Clinical Microbiology, May 1999, p. 1570-1572, Vol. 37, No. 5
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Virulence Factors and Phenotypical Traits of Verotoxin-Producing Escherichia coli Strains Isolated from Asymptomatic Human Carriers

R. Stephan* and F. Untermann

Institute of Food Safety and Hygiene, Faculty of Veterinary Medicine, University of Zurich, CH-8057 Zurich, Switzerland

Received 17 September 1998/Returned for modification 10 December 1998/Accepted 27 January 1999

Fourteen verotoxin-producing Escherichia coli strains isolated from stool samples of 14 different asymptomatic human carriers were further characterized. A variety of serotypes was found, but none of the strains belonged to serogroup O157. Only one isolate carried most of the virulence genes that are associated with increased pathogenicity.

* Corresponding author. Mailing address: Institute of Food Safety and Hygiene, Faculty of Veterinary Medicine, University of Zurich, Winterthurerstr. 270, CH-8057 Zurich, Switzerland. Phone: 1 635 86 54. Fax: 1 635 89 08. E-mail: ils{at}fsafety.unizh.ch.

Journal of Clinical Microbiology, May 1999, p. 1570-1572, Vol. 37, No. 5
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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  • Bettelheim, K. A. (2003). Non-O157 Verotoxin-Producing Escherichia coli: A Problem, Paradox, and Paradigm. Exp. Biol. Med. 228: 333-344 [Abstract] [Full Text]  


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