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Branhamella catarrhalis pneumonia.

M H Louie, E L Gabay, G E Mathisen

    The Western Journal of Medicine
    |January 1, 1983
    PubMed
    Summary

    Branhamella catarrhalis can cause acute pneumonia in healthy individuals. Prompt diagnosis via transtracheal aspiration and culture leads to effective antimicrobial treatment.

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    Area of Science:

    • Medical Microbiology
    • Infectious Diseases
    • Pulmonology

    Background:

    • Branhamella catarrhalis is a Gram-negative diplococcus.
    • Its role as a primary respiratory pathogen is often underestimated.
    • Pneumonia diagnosis typically relies on identifying causative agents in respiratory secretions.

    Observation:

    • Five cases of pneumonia were diagnosed using transtracheal aspiration and culture.
    • Branhamella catarrhalis was identified as the causative agent in all cases.
    • The pneumonia presented as acute lobar pneumonia.

    Findings:

    • Branhamella catarrhalis can cause acute lobar pneumonia in non-immunocompromised individuals.
    • The condition generally responded well to appropriate antimicrobial therapy.
    • Gram-negative diplococci on lower respiratory tract smears warrant consideration of B. catarrhalis.

    Implications:

    • Clinicians should consider Branhamella catarrhalis as a potential cause of pneumonia.
    • Early recognition and targeted therapy can improve patient outcomes.
    • This finding expands the understanding of B. catarrhalis pathogenicity in respiratory infections.

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