Case Report

Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report

Volume: 48 Number: 3 September 30, 2026
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Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report

Abstract

Q fever is a zoonotic disease that typically occurs in the spring and is commonly associated with animal exposure; however, atypical epidemiological and clinical presentations may lead to diagnostic challenges. In this report, a 34-year-old male patient without a history of animal contact presented in February with fever, cough, and dyspnea, and was diagnosed with community-acquired pneumonia. The lack of response to beta-lactam therapy and the subsequent development of asymptomatic transaminase elevation were notable findings. Serological testing revealed elevated Phase II IgG and IgM antibody titers against Coxiella burnetii, which, together with the compatible clinical presentation, supported the classification of the case as probable acute Q fever presenting with pneumonia and concomitant hepatitis. Clinical and biochemical improvement was achieved with levofloxacin therapy. This case highlights that Q fever may occur during the winter months and in the absence of identifiable epidemiological risk factors, and that the coexistence of pneumonia and hepatitis may provide important diagnostic clues. Q fever should be considered in the differential diagnosis of pneumonia cases unresponsive to empirical antibiotic therapy.

Keywords

Supporting Institution

This study received no financial support.

Ethical Statement

Written informed consent was obtained from the patient for publication of this case report and any accompanying images.

References

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Details

Primary Language

English

Subjects

Multimorbidity

Journal Section

Case Report

Publication Date

September 30, 2026

Submission Date

May 7, 2026

Acceptance Date

August 28, 2026

Published in Issue

Year 2026 Volume: 48 Number: 3

APA
Öksüz, C., & Buyuktuna, S. A. (2026). Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report. Cumhuriyet Medical Journal, 48(3), 142-145. https://doi.org/10.7197/cmj.1946790
AMA
1.Öksüz C, Buyuktuna SA. Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report. CMJ. 2026;48(3):142-145. doi:10.7197/cmj.1946790
Chicago
Öksüz, Caner, and Seyit Ali Buyuktuna. 2026. “Winter-Onset Acute Q Fever Presenting As Atypical Pneumonia With Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report”. Cumhuriyet Medical Journal 48 (3): 142-45. https://doi.org/10.7197/cmj.1946790.
EndNote
Öksüz C, Buyuktuna SA (September 1, 2026) Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report. Cumhuriyet Medical Journal 48 3 142–145.
IEEE
[1]C. Öksüz and S. A. Buyuktuna, “Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report”, CMJ, vol. 48, no. 3, pp. 142–145, Sept. 2026, doi: 10.7197/cmj.1946790.
ISNAD
Öksüz, Caner - Buyuktuna, Seyit Ali. “Winter-Onset Acute Q Fever Presenting As Atypical Pneumonia With Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report”. Cumhuriyet Medical Journal 48/3 (September 1, 2026): 142-145. https://doi.org/10.7197/cmj.1946790.
JAMA
1.Öksüz C, Buyuktuna SA. Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report. CMJ. 2026;48:142–145.
MLA
Öksüz, Caner, and Seyit Ali Buyuktuna. “Winter-Onset Acute Q Fever Presenting As Atypical Pneumonia With Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report”. Cumhuriyet Medical Journal, vol. 48, no. 3, Sept. 2026, pp. 142-5, doi:10.7197/cmj.1946790.
Vancouver
1.Caner Öksüz, Seyit Ali Buyuktuna. Winter-Onset Acute Q fever Presenting as Atypical Pneumonia with Hepatitis in the Absence of Epidemiological Risk Factors: A Case Report. CMJ. 2026 Sep. 1;48(3):142-5. doi:10.7197/cmj.1946790