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First case report of bacteremia caused by Haematobacter massiliensis in Turkey

Sümeyye Akyüz

Sümeyye Akyüz

Department of Medical Microbiology, Erzincan Binali Yıldırım University, Faculty of MedicineTurkey
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Akyüz, Sümeyye
, 
Betül Sümer

Betül Sümer

Infectious Diseases and Clinical Microbiology, Mengücek Gazi Training and Research HospitalTurkey
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Sümer, Betül
, 
Murat Günay

Murat Günay

Medical Biochemistry, Mengücek Gazi Training and Research HospitalTurkey
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Günay, Murat
, 
Elif Seren Tanrıverdi

Elif Seren Tanrıverdi

Microbiology Laboratory Unit, Malatya Training and Research HospitalTurkey
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Tanrıverdi, Elif Seren
 und 
Barış Gülhan

Barış Gülhan

Department of Medical Microbiology, Erzincan Binali Yıldırım University, Faculty of MedicineTurkey
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Gülhan, Barış
  
15. Mai 2025
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Online veröffentlicht: 15. Mai 2025
Seitenbereich: 125 - 130
Eingereicht: 28. März 2025
Akzeptiert: 24. Apr. 2025
DOI: https://doi.org/10.2478/rrlm-2025-0013
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© 2025 Sümeyye Akyüz et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Background

Haematobacter massiliensis is a Gram-negative, non-motile, non-spore-forming, non-fermenting, pleomorphic, and aerobic bacillus. It is rarely isolated from bloodstream infections such as bacteremia, particularly in immunosuppressed patients.

Case presentation

We report the case of a 67-year-old female patient with a recent history of coronary angiography who presented to the Infectious Diseases outpatient clinic in February 2023 with complaints of fever, chills, rigors, and sweating. Blood cultures obtained for fever etiology identified Haematobacter massiliensis as the causative agent using MALDI-TOF MS and 16S rRNA gene sequencing. The patient was successfully treated and discharged in good health.

Conclusions

The paper reports the first case of bacteremia caused by Haematobacter massiliensis in Turkey. Haematobacter species are clinically significant due to their potential to cause bloodstream infections, particularly in immunosuppressed patients, and should be considered in the differential diagnosis. In patients presenting with fever of unknown origin, bacteremia, particularly when atypical growth patterns are observed in cultures, Haematobacter massiliensis should be considered a rare but potential pathogen.
Sprache:
Englisch
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Fachgebiete der Zeitschrift:
Biologie, Molekularbiologie, Biochemie, Humanbiologie, Mikrobiologie und Virologie
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