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Volume 44, Number 1, February 2011

Comamonas testosteroni infection in Taiwan: Reported two cases and literature review

Tung-Lin Tsui, Shih-Ming Tsao, Ken-Sen Liu, Tzy-Yen Chen, Ya-Lin Wang, Ying-Hock Teng, Yuan-Ti Lee

Received: July 11, 2008    Revised: June 20, 2009    Accepted: August 18, 2009   


Corresponding author:

Faculty of Medicine, School of Medicine, Chung Shan Medical University, Division of Infectious Diseases, Department of Internal Medicine, Chung Shan Medical University, No.110, Sec.1, Jianguo N. Rd., South  District, Taichung City 40201, Taiwan.
E-mail address: (Y.-T. Lee).


Background and purpose: 

Comamonas testosteroni is a widely distributed aerobic gram-negative bacillus. Infection by C testosteroni is infrequent, and no such cases have been reported in Taiwan. Here, we would like to present a 54-year-old alcoholic patient from Taiwan, and his left leg was injured during a fishing trip, resulting in left leg cellulitis and C testosteroni bacteremia. The patient’s fever subsided after initial treatment with extended-spectrum cephalosporin, whereas his erythematous swelling did not resolve until switched to ciprofloxacin. The second patient is a 73-year old Taiwanese male with chronic hepatitis B infection, liver cirrhosis, and hepatocellular carcinoma. Comamonas testosteroni bacteremia was found after transarterial embolization. Further studies are necessary to determine the best antibiotic(s) for patients infected with
C testosteroni.


Key words:

Bacteremia; Case report; Comamonas infection; Comamonas testosteroni; Taiwan