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Related Experiment Videos

Hemophilus influenzae biotypes and chronic bronchitis.

J P Kilbourn, H Haas, J F Morris

    The American Review of Respiratory Disease
    |December 1, 1983
    PubMed
    Summary

    This study identified Hemophilus influenzae biotype II in chronic bronchitis patients. Findings suggest exchange between upper and lower respiratory tracts in these individuals.

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    Area of Science:

    • Microbiology
    • Pulmonary Medicine

    Background:

    • Hemophilus influenzae biotyping is crucial for understanding respiratory infections.
    • Chronic bronchitis patients often harbor respiratory pathogens.

    Purpose of the Study:

    • To determine Hemophilus influenzae biotypes in adult chronic bronchitis patients.
    • To compare biotypes from upper and lower respiratory tracts of individual patients.

    Main Methods:

    • Utilized Minitek and IDS RapID Systems for rapid biotyping of respiratory isolates.
    • Analyzed biochemical reactions of Hemophilus influenzae isolates.
    • Compared biotypes from transtracheal and oropharyngeal samples.

    Main Results:

    • 79% of isolates were identified as biotype II using the Minitek system.
    • Both Minitek and IDS RapID Systems confirmed biotype II in most isolates.
    • Identical biotypes were observed in paired upper and lower respiratory tract samples.

    Conclusions:

    • Hemophilus influenzae biotype II is prevalent in chronic bronchitis patients.
    • Evidence supports the exchange of Hemophilus influenzae between the oropharynx and tracheobronchial tree.
    • Rapid biotyping kits are effective for clinical isolates.

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