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Journal of Clinical Microbiology, June 2000, p. 2440-2442, Vol. 38, No. 6
0095-1137/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Relationship of Genetic Type of Shiga Toxin to Manifestation of
Bloody Diarrhea due to Enterohemorrhagic Escherichia
coli Serogroup O157 Isolates in Osaka City, Japan
Y.
Nishikawa,1,*
Z.
Zhou,1,
A.
Hase,1
J.
Ogasawara,1
T.
Cheasty,2 and
K.
Haruki1
Department of Health and Epidemiology, Osaka
City Institute of Public Health and Environmental Sciences, 8-34, 543-0026, Osaka, Japan,1 and Laboratory
of Enteric Pathogens, Central Public Health Laboratory, London NW9
5HT, United Kingdom2
Received 12 August 1999/Returned for modification 1 December
1999/Accepted 28 February 2000
One hundred sixty-nine strains of enterohemorrhagic
Escherichia coli serogroup O157 were examined for the
correlation between the genotype of their Shiga toxin genes
(stx) and manifestation of bloody diarrhea (BD). It was
shown that the strains carrying only stx2vha were probably
less virulent and caused BD less frequently.
*
Corresponding author. Mailing address: Department of
Food and Nutrition, Faculty of Human Life Science, Osaka City
University, 558-8585, Japan. Phone: (06) 6605-2883. Fax: (06)
6605-2914. E-mail: nisikawa{at}life.osaka-cu.ac.jp.

Present address: Changchun University of Agriculture and Animal
Sciences, Changchun,
China.
Journal of Clinical Microbiology, June 2000, p. 2440-2442, Vol. 38, No. 6
0095-1137/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
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