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Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia

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Olsenella uli-induced pneumonia: a case report.

Yufen Yan^1,2, Hong Li³, Shuai Li¹

¹Department of Outpatient and Emergency, the Affiliated Hospital of Qingdao University, 16 Jiangsu Road, 266000, Qingdao, China.

Annals of Clinical Microbiology and Antimicrobials

|March 2, 2022

Summary

This study reports the first lung infection caused by Olsenella uli, a bacterium typically found in the mouth. Prompt antibiotic treatment led to the patient's recovery, suggesting a link between oral bacteria and pneumonia.

Keywords:

Human infection Olsenella uli Pneumonia

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Area of Science:

Microbiology
Infectious Diseases
Pulmonology

Background:

Olsenella uli, an anaerobic bacterium, is commonly found in the oral and gastrointestinal tracts.
This bacterium has not previously been associated with lower respiratory tract infections.

Observation:

A 70-year-old male farmer presented with persistent cough and bloody sputum.
Computed tomography (CT) and lung biopsy revealed bilateral pneumonia.
Olsenella uli was identified in sputum samples via multiple analytical methods.

Findings:

This is the first reported case of Olsenella uli causing lung infection.
The patient was successfully treated with ceftazidime, a third-generation cephalosporin.
Recovery was achieved within 10 days of antibiotic therapy.

Implications:

This case suggests a potential causative role for gingival bacteria in pneumonia development.
Early diagnosis and appropriate antibiotic therapy are crucial for treating Olsenella uli-induced pneumonia.