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Journal of Clinical Microbiology, June 1999, p. 2104-2105, Vol. 37, No. 6
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Primary Shewanella alga Septicemia in a Patient on Hemodialysis

Morihiro Iwata,1 Kazuhiro Tateda,1,2,* Tetsuya Matsumoto,1,2 Nobuhiko Furuya,1,2 Sonoo Mizuiri,3 and Keizo Yamaguchi1,2

Clinical Laboratory Department,1 Department of Microbiology,2 and Department of Nephrology,3 Toho University School of Medicine, Tokyo 143, Japan

Received 29 October 1998/Returned for modification 7 February 1999/Accepted 5 March 1999

We report the first Japanese case of primary septicemia with Shewanella alga and also describe the bacteriological characteristics of and results of antibiotic susceptibility tests of the isolate. S. alga was repeatedly isolated, at times simultaneously with Escherichia coli, from the blood of a 64-year-old female undergoing hemodialysis. The isolated organism was determined to be S. alga based on recently published identification criteria, such as hemolysis on sheep blood agar, no acid production from carbohydrates, and growth on agar containing 6.5% NaCl. Results of antibiotic susceptibility tests demonstrated that the isolate was sensitive to levofloxacin and cefpirome (MICs, <= 0.063) but resistant to cefazolin, ceftizoxime, and imipenem (MICs, >128, 64, and 8 µg/ml, respectively). Although the role of S. alga as a human pathogen has not been fully determined, accumulating data suggest that this organism may be a potential pathogen, especially in compromised hosts.

* Corresponding author. Mailing address: Department of Microbiology, Toho University School of Medicine, 5-21-16 Ohmori-nishi, Ohtaku, Tokyo 143, Japan. Phone: 81-3-3762-4151, ext. 2397. Fax: 81-3-5493-5415. E-mail: kazu{at}med.toho-u.ac.jp.

Journal of Clinical Microbiology, June 1999, p. 2104-2105, Vol. 37, No. 6
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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