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Related Experiment Videos

Close contact with tuberculosis in childhood

M Uhari, O Linna

    European Journal of Respiratory Diseases
    |November 1, 1982
    PubMed
    Summary

    Children exposed to tuberculosis (TB) require careful monitoring. Those in contact with smear-positive TB cases face a higher risk of infection, underscoring the need for targeted screening.

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    Area of Science:

    • Pediatrics
    • Infectious Diseases
    • Public Health

    Background:

    • Tuberculosis (TB) remains a significant global health concern, necessitating effective contact tracing and management strategies.
    • BCG vaccination is a common preventive measure for TB, but its efficacy in preventing infection in close contacts requires ongoing evaluation.
    • Identifying high-risk pediatric populations for TB infection is crucial for timely diagnosis and treatment.

    Purpose of the Study:

    • To assess the risk of tuberculosis infection in children who have had close contact with adult TB patients.
    • To evaluate the effectiveness of the Mantoux test in identifying infected children within this cohort.
    • To determine the necessity and impact of INH (isoniazid) prophylaxis in exposed children.

    Main Methods:

    • A 1-year prospective study involving 83 children in close contact with 52 adults diagnosed with tuberculosis.
    • Utilized the Mantoux test to assess tuberculin skin reactivity (PPD) in all child contacts.
    • Administered INH therapy to children based on age, Mantoux test results, or conversion of test results.

    Main Results:

    • 49% of BCG-vaccinated children tested PPD negative.
    • One 14-year-old boy was diagnosed with primary tuberculosis and received treatment.
    • Nine children received INH therapy due to positive Mantoux tests or conversion; seven had contact with smear-positive index cases.

    Conclusions:

    • Routine examination of children in contact with TB patients is feasible as TB incidence declines.
    • Children exposed to smear-positive TB index cases are at a significantly higher risk of contracting tuberculosis.
    • Targeted screening and preventive therapy are essential for high-risk pediatric TB contacts.

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