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The Journal of the Japanese Society for Clinical Microbiology |
Biblioraphy Information
| ArticleTitle |
A Case of Vero Toxin and Extended-spectrum β -Lactamase Producing Escherichia coli O26 Infection |
| Language |
J |
| AuthorList |
Masanobu Otsuka1), Mieko Yoshida1), Masako Izawa2), Taku Uno2), Yukitoshi Yamaguchi2), Noriaki Shinomiya2), Yoshikazu Ishii3), Keizo Yamaguchi3), Naotaka Hashizume1) |
| Affiliation |
1) Department of Laboratory Medicine, Toho University Ohashi Hospital
2) Department of Second Pediatrics, Toho University School of Medicine
3) Department of Microbiology, Toho University School of Medicine |
| Publication |
J.J.C.M.: 15 (1), 15-19, 2005 |
| Received |
October 18, 2004 |
| Accepted |
December 17, 2004 |
| Abstract |
We report an infection with Escherichia coli O26 which produces Vero toxin and also an extended-spectrum β -lactamase (ESBL). A nine-years-old girl presented an abdominal pain and water like diarrhea. The patient consulted Department of Pediatrics, Toho University Ohashi Hospital on June 14, 2004. E. coli was isolated from the faces sample of this patient on June 16. The type of O antigen of this strain confirmed as O26, and this strain also confirmed VT1 positive, as a Vero toxin. However, this strain produced no VT2. Moreover, the MIC value of this strain against cefotaxime was more 32 μ g/ml or more by antibiotic susceptibility testing. Accordingly, the ESBL confirmatory testing by disk diffusion method was done following the recommendation of the National Committee for Clinical Laboratory Standard performed for this strain. From the results of this test, it is strongly suggested that this strain produces one of the ESBL. The ESBL of this strain was categorized in CTX-M-9 group β -lactamase by PCR analysis using specific primer sets. This is the first report of ESBL and Vero toxin (VT1) producing E. coli O26 infection. |
| Keywords |
Escherichia coli O26, Vero toxin, extended-spectrum β-lactamase (ESBL) |
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