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Published on: February 23, 2014

Etiology of acute otitis media in infants and children

O E Laxdal, R M Blake, T Cartmill

    Canadian Medical Association Journal
    |January 22, 1966
    PubMed

    Insights

    Identifying bacterial and viral causes of acute otitis media in children is challenging. Many cases remain unexplained, with middle ear fluid cultures often sterile for viruses and inconsistent for bacteria.

    Area of Science:

    • Pediatrics
    • Infectious Diseases
    • Microbiology

    Background:

    • Acute otitis media (AOM) is a common childhood infection.
    • Accurate identification of causative pathogens is crucial for effective treatment.

    Purpose of the Study:

    • To identify bacterial and viral agents responsible for acute otitis media in children.
    • To evaluate the diagnostic value of nasopharyngeal secretions and middle ear fluid cultures.

    Main Methods:

    • Intensive study of 71 children with AOM.
    • Analysis of nasopharyngeal secretions.
    • Bacterial culture and viral isolation from middle ear fluid obtained via needle aspiration.
    • Viral serology.

    Main Results:

    • Bacterial pathogens were found in 10 of 20 middle ear fluid specimens.
    • Viruses were not detected in middle ear fluid.
    • Nose and throat cultures identified bacterial pathogens in less than 40% of cases and were poor predictors of middle ear flora.
    • Influenza C was isolated in one case; viral serology suggested influenza A2 and adenovirus in two cases.
    • Causative agents were not identified in nearly 50% of children.

    Conclusions:

    • Bacterial pathogens are frequently present in middle ear fluid of children with AOM.
    • Viral detection in middle ear fluid is uncommon.
    • Nasopharyngeal cultures have limited value in predicting middle ear pathogens.
    • A significant proportion of AOM cases remain etiologically unexplained.

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