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Volume 42, Number 2, April 2009

Complicated intra-abdominal infection caused by extended drug–resistant Achromobacter xylosoxidans

Sing-On Teng, Tsong-Yih Ou, Yu-Chia Hsieh, Wuan-Chan Lee, Yi-Chun Lin, Wen-Sen Lee
Division of Infectious Disease, Department of Internal Medicine, Taipei Medical University, Wan Fang Hospital; and Taipei Medical University Hospital, Taipei, Taiwan

Received: April 14, 2008    Revised: June 6, 2008    Accepted: August 31, 2008   


Corresponding author:

Corresponding author: Dr. Wen-Sen Lee, Taipei Medical University, Wan Fang Hospital, No. 111, Section 3, Hsing Long Road, Taipei 116, Taiwan. E-mail: Wen-Sen Lee This e-mail address is being protected from spam bots, you need JavaScript enabled to view it




Achromobacter xylosoxidans (formerly Alcaligenes xylosoxidans) is a rare but important nosocomial pathogen. Antibiotic resistance has been increasing during the past decade. A. xylosoxidans may be confused with Pseudomonas spp. but, unlike Pseudomonas spp., this organism has peritrichous flagella. Complicated intra-abdominal infection with A. xylosoxidans has rarely been reported in the literature. This report is of an immunocompetent patient with acute cholecystitis complicated by an intra-abdominal abscess after surgery. Culture of both blood and ascites yielded extended drug–resistant A. xylosoxidans, which was only sensitive to colistin. The clinical and laboratory characteristics of A. xylosoxidans are presented.


Key words:

Abdomen; Achromobacter denitrificans; Colistin; Infection



J Microbiol Immunol Infect. 2009;42:176-180.