Abstract
Arthrobacter woluwensis is a Gram-positive, aerobic Actinobacteria that is widely distributed in the environment worldwide. Little is known about A. woluwensis infection and it is commonly mis-identified by culturing with commercial kits. To date, only six cases of bacteremia caused by A. woluwensis have been reported in the literature. Herein, we report a case of Arthrobacter woluwensis bacteremia in an immunocompromised host. In this case report, the results of antimicrobial susceptibility testing showed that this clinical isolate of A. woluwensis is sensitive to vancomycin, teicoplanin, but resistant to penicillin, cephalosporin and ciprofloxacin. Additionally, whole genome sequencing analysis identified common subunits of the urease system.
Highlights
Arthrobacter woluwensis is a Gram-positive, aerobic Actinobacteria that is widely distributed in the environment, mainly in soil, and it sometimes represents the majority of single bacterial groups in aerobic plate counts of soil specimens [1]
Considering its rarity and similarity to other corynebacteriae, it is commonly mis-identified in culturing by commercial kits, proper identification often requires assistance from molecular biological methods, such as chemotaxonomic methods or ribosomal RNA/DNA sequencing
To the best of our knowledge, only six cases of bacteremia related to Arthrobacter woluwensis have been reported to date [1,3,4,5,6,7]
Summary
Arthrobacter woluwensis is a Gram-positive, aerobic Actinobacteria that is widely distributed in the environment, mainly in soil, and it sometimes represents the majority of single bacterial groups in aerobic plate counts of soil specimens [1]. Arthrobacter strains have relatively low pathogenic potential but they can be pathogenic to immunocompromised hosts. Arthrobacter spp. was first considered as a Corynebacterium in 1896 when the species Corynebacterium was first proposed, but it was later assessed to be a distinct species [2]. To the best of our knowledge, only six cases of bacteremia related to Arthrobacter woluwensis have been reported to date [1,3,4,5,6,7]. Arthrobacter woluwensis bacteremia during their hospital admission
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