Agrobacterium radiobacter is a gram-negative bacillus, which is recognized as an emerging opportunistic human pathogen. To our knowledge, there have been only 25 cases of A. radiobacter bacteremia reported. In most of these, A. radiobacter was associated with long-term indwelling plastic central venous catheters. We describe a 78-year-old man who had a history of chronic obstructive pulmonary disease with long-term use of a corticosteroid. He was admitted to the China Medical College Hospital with pneumonia caused by Serratia marcescens. His general condition gradually improved after initiation of appropriate treatment. Unfortunately, he developed A. radiobacter bacteremia while hospitalized in the medical intensive care unit. With the onset of this infection, the patient had a high fever, leukocytosis, raised C-reactive protein level, and positive blood cultures for A. radiobacter. A central venous catheter-related infection was suspected because of redness and localized tenderness at the catheter site. The patient gradually recovered after removal of the catheter and appropriate antimicrobial treatment with latamoxef 1.5 g intravenously every 8 hours for 10 days.
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