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Updated: Aug 14, 2026

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
Published on: March 17, 2014
Community acquired Pseudomonas aeruginosa pneumonia
H R Vikram1, E T Shore, P R Venkatesh
1Hartford Hospital, USA.
Abstract:
Pseudomonas aeruginosa is an uncommon cause of community acquired pneumonia in immunocompetent hosts. We report two cases that did well once appropriate and prolonged antimicrobial therapy was initiated. They had no evidence of immune deficiency. The initial consideration was pulmonary tuberculosis in both cases given the subacute presentation, significant weight loss, and findings on chest roentgenogram.
Insights
Pseudomonas aeruginosa pneumonia is rare in healthy individuals. Prompt, extended antibiotic treatment led to recovery in two immunocompetent patients, challenging initial tuberculosis diagnoses.
Area of Science:
- Infectious Diseases
- Pulmonology
- Microbiology
Background:
- Community-acquired pneumonia (CAP) typically results from common bacterial pathogens.
- Pseudomonas aeruginosa is an opportunistic pathogen rarely causing CAP in immunocompetent hosts.
Observation:
- Two immunocompetent patients presented with subacute pneumonia, significant weight loss, and radiographic findings mimicking tuberculosis.
- Initial diagnostic considerations included pulmonary tuberculosis due to clinical presentation.
Findings:
- Both patients were diagnosed with Pseudomonas aeruginosa pneumonia.
- Appropriate and prolonged antimicrobial therapy resulted in successful clinical recovery for both individuals.
- No underlying immune deficiency was identified in either case.
Implications:
- Highlights the importance of considering P. aeruginosa in the differential diagnosis of CAP, even in immunocompetent individuals.
- Emphasizes the necessity of prolonged and targeted antimicrobial therapy for successful treatment outcomes.
- Underscores the need for thorough investigation to rule out less common pathogens in atypical pneumonia presentations.
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