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Updated: May 11, 2026

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
Published on: March 1, 2024
Bacteremia due to imipenem-resistant Roseomonas mucosa in a child with acute lymphoblastic leukemia
Anne-Laure Michon1, Laure Saumet, Alice Bourdier
1*Unité de Bactériologie Siméon de Buochberg, UMR 5119 ECOSYM, Equipe Pathogènes et Environnements, U.F.R. des Sciences Pharmaceutiques et Biologiques, Université Montpellier 1 ‡Département de Pédiatrie, Unité d'onco-hématologie †Laboratoire de Bactériologie, Hôpital Arnaud de Villeneuve §Laboratoire d'Hygiène hospitalière, Centre Hospitalier Régional Universitaire de Montpellier, Montpellier, France.
Abstract:
Roseomonas are described as opportunistic pathogens rarely involved in human infections. Their identification requires molecular methods and their antimicrobial susceptibility pattern varies according to the species. We report the first case of bacteremia due to Roseomonas mucosa in a child with leukemia and reviewed pediatric cases of Roseomonas infection, for which undoubted strain identification was available. Favorable outcome was observed despite resistance to numerous β-lactams that may account for delayed effective treatment, suggesting the low virulence of Roseomonas in children. Here, the strain also displayed unusual resistance to imipenem, highlighting the possible acquisition of additional resistance by this pathogen.
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