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Q Fever: An Emerging Reality in Portugal.

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Summary

Q fever, a zoonotic disease caused by Coxiella burnetii, is increasingly prevalent in Europe. This case highlights the importance of considering Q fever in atypical pneumonia diagnoses, even without risk factors.

Keywords:
atypical pneumoniacoxiella burnetiiendemicportugalq fever

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Area of Science:

  • Infectious Diseases
  • Zoonotic Diseases
  • Public Health

Background:

  • Q fever is a zoonosis caused by Coxiella burnetii, with increasing prevalence in Europe and endemic in Portugal.
  • Transmission occurs via inhalation of aerosols or ingestion of contaminated dairy products from reservoirs like cattle, goats, and sheep.

Observation:

  • Most Q fever cases are asymptomatic, but symptoms can include fever, atypical pneumonia, hepatitis, and cutaneous manifestations.
  • Chronic or persistent Q fever can develop years after initial infection, necessitating long-term follow-up.
  • The authors report a rare case of Coxiella burnetii pneumonia with cutaneous and hepatic involvement in a patient lacking typical risk factors.

Findings:

  • Clinical presentation of Q fever is highly variable, often leading to delayed diagnosis.
  • The disease requires systematic consideration, especially in patients with risk factors such as prostheses, immunosuppression, pregnancy, or specific epidemiological settings.
  • This case underscores the diagnostic challenge of Q fever, emphasizing the need for a high index of suspicion.

Implications:

  • Q fever should be included in the differential diagnosis for fever or atypical pneumonia, irrespective of known risk factors.
  • Mandatory reporting of Q fever cases in Europe, particularly Portugal, is crucial for understanding its true public health impact.
  • Early and accurate diagnosis is essential for managing Q fever and preventing potential long-term complications.