Xenophilus aerolatus isolate misidentified as Brucella spp. by MALDI-TOF MS (VITEK-MS) system

•VITEK-MS system misidentified a Xenophilus aerolatus strain as Brucella spp.•The strain growth on ColorexTM mSuperCARBA, suggesting carbapenem resistance.•The genome was sequenced, updating knowledge about this rare species. We report the characterization of Xenophilus aerolatus strain identified f...

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Bibliographic Details
Published in:Diagnostic microbiology and infectious disease 2024-12, Vol.110 (4), p.116543, Article 116543
Main Authors: Lévesque, Simon, Rouleau, Samuel, Bergeron, Danny, Brown, Nathalie, Bekal, Sadjia, Lalancette, Cindy, Alarie, Isabelle
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - pharmacology
Brucella - classification
Brucella - genetics
Brucella - isolation & purification
Brucellosis - diagnosis
Brucellosis - microbiology
Diagnostic Errors
Humans
MALDI-TOF MS
Misidentification
Rectum - microbiology
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - methods
Whole Genome Sequencing
Xenophilus aerolatus
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Summary:•VITEK-MS system misidentified a Xenophilus aerolatus strain as Brucella spp.•The strain growth on ColorexTM mSuperCARBA, suggesting carbapenem resistance.•The genome was sequenced, updating knowledge about this rare species. We report the characterization of Xenophilus aerolatus strain identified from a screening rectal swab specimen in human, initially misidentified as Brucella spp. by MALDI-TOF MS (VITEK-MS system). The strain is able to growth on ColorexTM mSuperCARBA plate, suggesting carbapenem resistance. Whole genome sequencing identified several potential antimicrobial resistance mechanisms.
ISSN:0732-8893
1879-0070
1879-0070
DOI:10.1016/j.diagmicrobio.2024.116543