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May 20, 2026American Journal of Respiratory and Critical Care Medicine

C69-02 Delayed Dog-Associated Bordetella Bronchiseptica Bronchopneumonia in an Immunocompetent Host: An Unusual Report

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Authors

ICI M Cherrez-OjedaJCJ C CalderonFCF Cardenas-Ponce

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Overview

A case report shows improved outcomes after treatment for bronchopneumonia in an immunocompetent individual.

Key Points

  • This report investigates Bordetella bronchiseptica infection causing bronchopneumonia in an elderly individual with a prolonged cough and weight loss.
  • Case presentation of a 74-year-old man with respiratory symptoms and history of dog exposure.
  • Diagnostic imaging included chest CT, and bronchoscopy with bronchoalveolar lavage performed to confirm infection.
  • Patient treated with levofloxacin for 14 days, followed by evaluation of disease resolution.
  • Initial St. George's Respiratory Questionnaire (SGRQ) score was 65%, indicating poor quality of life.
  • Post-treatment, the patient regained weight and achieved a total SGRQ score of 9% after 6 months.
  • Chest CT showed marked improvement in bronchial health with reduced thickening and no consolidation.

Cite This Study

Cherrez-Ojeda et al. (2026) studied this question.

synapsesocial.com/papers/6a0d4fbff03e14405aa9b294https://doi.org/10.1093/ajrccm/aamag162.4493
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