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Ann Lab Med. 2016 Jul;36(4):367-370. doi: 10.3343/alm.2016.36.4.367.

Two Cases of Bacteremia Due to Roseomonas mucosa.

Author information

1
Department of Laboratory Medicine, Yeungnam University School of Medicine, Daegu, Korea.
2
Department of Laboratory Medicine, Kyungpook National University Hospital, Daegu, Korea.
3
Department of Clinical Pathology, Kyungpook National University School of Medicine, Daegu, Korea.
4
Department of Clinical Pathology, Kyungpook National University School of Medicine, Daegu, Korea. leewk@knu.ac.kr.

Abstract

Roseomonas is a genus of pink-pigmented nonfermentative bacilli. These slow-growing, gram-negative cocobacilli form pink-colored colonies on sheep blood agar. They differ from other pink-pigmented nonfermenters, including Methylobacterium, in morphology, biochemical characteristics, and DNA sequence. Roseomonas strains are rarely isolated in clinical laboratories; therefore, we report two cases in order to improve our ability to identify these pathogens. We isolated two strains of Roseomonas mucosa from the venous blood cultures of two patients, an 84-yr-old woman with common bile duct obstruction and a 17-yr-old male with acute myeloid leukemia who had an indwelling central-venous catheter for chemotherapy. The isolated strains were confirmed as R. mucosa by 16S rRNA sequencing.

KEYWORDS:

16S rRNA sequencing; Pink-pigmented nonfermenters; Roseomonas mucosa

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