Community-acquired pneumonia with Acinetobacter radioresistens bacteremia in an immunocompetent host: A case report

ABSTRACT

Rationale Acinetobacter radioresistens is a non-fermentative Gram-negative coccobacillus that is environmentally ubiquitous and is an uncommon cause of pneumonia in an immunocompetent patient with no known chronic medical illness. Patient concerns A middle-aged Asian male with a smoking history presented with fever and cough. Physical examination was unremarkable. Chest imaging was consistent with pulmonary parenchymal infection and blood culture grew Acinetobacter radioresistens. Diagnosis Community acquired pneumonia with Acinetobacter radioresistens bacteremia. Interventions: The patient received a combination of intravenous and oral ampicillin-sulbactam over 2 weeks. Outcomes: Repeat blood cultures showed resolution of bacteremia. Completion of antimicrobial treatment saw resolution of respiratory symptoms and radiological pneumonic changes. Lessons Acinetobacter radioresistens causing community-acquired pneumonia in an immunocompetent host has never been described before. It may be a novel emerging infectious agent in pulmonary infections. Its clinical course in this immunocompetent patient appears to be relatively benign.