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Volume 31, Number 11—November 2025

Synopsis

Trichosporon austroamericanum Infections among Hospitalized Patients, France, 2022–2024

Emilie Burel, Catherine Sartor, Valérie Moal, Vincent Bossi, Jacques Sevestre, Justine Solignac, Rémi Charrel, Marie Desnos-Ollivier, Stéphane Ranque, and Estelle MenuComments to Author 
Author affiliation: Institut Méditerranée-Infection, Marseille, France (E. Burel, V. Bossi); Aix-Marseille Université, Marseille (E. Burel, R. Charrel); Assistance Publique Hôpitaux de Marseille, Hôpital Conception, Marseille (C. Sartor, V. Moal, J. Solignac, R. Charrel); Aix Marseille Université, Institut de Recherche et Développement, Marseille (V. Moal); Aix-Marseille Université, Assistance Publique Hôpitaux de Marseille, Service de Santé des armées, Marseille (J. Sevestre, S. Ranque, E. Menu); Università di Corsica, Corte, France (R. Charrel); Institut Pasteur, Université Paris Cité, National Reference Center for Invasive Mycoses & Antifungals, Paris, France (M. Desnos-Ollivier)

Main Article

Figure 1

Maximum-likelihood phylogenetic tree of IGS1 sequences from study of Trichosporon austroamericanum infections among hospitalized patients, France, 2022–2024. The tree includes strains isolated from 6 patients (red font) and 1 environmental sample (L0453, blue font), mapped against T. austroamericanum and related species from GenBank (https://www.ncbi.nlm.nih.gov/genbank) and the CBS culture collection (https://wi.knaw.nl/fungal_table). Bold font indicates reference strain CBS 17435. The clustering confirms that the patient and environmental strains belong to T. austroamericanum and form a distinct clade. The tree also shows the relationships between other Trichosporon species, such as T. inkin, T. caseorum, and T. ovoides, and other T. austroamericanum reference strains from the National Reference Center for Invasive Mycoses and Antifungals at Institut Pasteur (https://www.pasteur.fr). Bootstrap values are indicated at the nodes. Scale bar indicates nucleotide substitutions per site. IGS, intergenic spacer region.

Figure 1. Maximum-likelihood phylogenetic tree of IGS1 sequences from study of Trichosporon austroamericanum infections among hospitalized patients, France, 2022–2024. The tree includes strains isolated from 6 patients (red font) and 1 environmental sample (L0453, blue font), mapped against T. austroamericanum and related species from GenBank (https://www.ncbi.nlm.nih.gov/genbank) and the CBS culture collection (https://wi.knaw.nl/fungal_table). Bold font indicates reference strain CBS 17435. The clustering confirms that the patient and environmental strains belong to T. austroamericanum and form a distinct clade. The tree also shows the relationships between other Trichosporon species, such as T. inkin, T. caseorum, and T. ovoides, and other T. austroamericanum reference strains from the National Reference Center for Invasive Mycoses and Antifungals at Institut Pasteur (https://www.pasteur.fr). Bootstrap values are indicated at the nodes. Scale bar indicates nucleotide substitutions per site. IGS, intergenic spacer region.

Main Article

Page created: September 18, 2025
Page updated: November 20, 2025
Page reviewed: November 20, 2025
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