Vol. 37 No. 2 (2020): April
Clinical Case

Comamonas kerstersii bacteremia in a young man with acute appendicitis

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  • Rosario Palacio,
  • Laura Cabezas,
  • Cecilia Cornejo,
  • Verónica Seija Scaroni
Rosario Palacio
HOSPITAL DE CLINICAS. FACULTAD DE MEDICINA. UNIVERSIDAD DE LA REPUBLICA. MONTEVIDEO. URUGUAY
Bio
Laura Cabezas
HOSPITAL DE CLINICAS. FACULTAD DE MEDICINA. UNIVERSIDAD DE LA REPUBLICA. MONTEVIDEO. URUGUAY
Bio
Cecilia Cornejo
HOSPITAL DE CLINICAS. FACULTAD DE MEDICINA. UNIVERSIDAD DE LA REPUBLICA. MONTEVIDEO. URUGUAY
Bio
Verónica Seija Scaroni
HOSPITAL DE CLINICAS. FACULTAD DE MEDICINA. UNIVERSIDAD DE LA REPUBLICA. MONTEVIDEO. URUGUAY
Bio

Published 2020-05-17

Keywords

How to Cite

1.
Palacio R, Cabezas L, Cornejo C, Seija Scaroni V. Comamonas kerstersii bacteremia in a young man with acute appendicitis. Rev. Chilena. Infectol. [Internet]. 2020 May 17 [cited 2025 Nov. 15];37(2). Available from: https://revinf.cl/index.php/revinf/article/view/520

Copyright (c) 2020 Rosario Palacio, Laura Cabezas, Cecilia Cornejo, Verónica Seija Scaroni

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Comamonas kerstersii is a non-fermenting Gram-negative bacillus. It has been associated with intra-abdominal infections. We describe a clinical case of bacteremia caused by C. kerstersii in a young man with acute appendicitis. The first identification, using the Vitek2 compact system (BioMerieux) from blood cultures, was Comamonas testosteroni. However, using MALDI-TOF was identified as C. kerstersii. The patient was treated first with ampicillin sulbactam and then piperacillin tazobactam with favorable evolution. Within the genus Comamonas, C. testosteroni has been the most frequently reported species as a cause of infections in humans, only 23 cases of C. kerstersii being described. Given the problems of phenotypic identification of these microorganisms, it is possible that some C. testosteroni reports could have corresponded to C. kerstersii. This case highlights the pathogenic role of C. kerstersii and the importance of using MALDI-TOF as a diagnostic tool for non-fermenting Gramnegative bacilli identification.
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