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Tuberculosis in children.

Jeffrey R Starke1

  • 1Baylor College of Medicine, Houston, Texas, USA. jstarke@bcm.tmc.edu

Seminars in Respiratory and Critical Care Medicine
|August 10, 2005
PubMed
Summary
This summary is machine-generated.

Tuberculosis in children varies by age at infection, with younger children showing immediate symptoms and older children developing adult-type disease. Diagnosis relies on a combination of tests, and treatment is effective, with chemotherapy being crucial for prevention.

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Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Microbiology

Background:

  • Tuberculosis (TB) presents differently in children versus adults, influenced by age and immune status.
  • Early childhood infection (before age 4) often leads to immediate symptoms, while preadolescent/adolescent infections may result in severe adult-type pulmonary TB later.
  • Diagnosing childhood TB is challenging due to limitations in current microbiological methods.

Purpose of the Study:

  • To elucidate the distinct natural history and clinical manifestations of Mycobacterium tuberculosis infection in children.
  • To highlight diagnostic challenges and the established diagnostic criteria for childhood TB.
  • To review treatment and prevention strategies for childhood tuberculosis.

Main Methods:

  • Review of the natural history of Mycobacterium tuberculosis infection based on age at infection and host immune status.

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  • Analysis of diagnostic criteria, including tuberculin skin tests, radiographic/clinical findings, and contact tracing.
  • Evaluation of treatment and prevention strategies, including bacille Calmette-Guérin (BCG) vaccination and chemotherapy.

    • Main Results:

    • Children under 4 with TB often exhibit immediate clinical/radiographic signs but rarely develop adult reactivation disease.
    • Older children (preadolescence/adolescence) are more susceptible to severe, adult-type pulmonary TB post-infection or in adulthood.
    • The diagnostic 'gold standard' involves a positive tuberculin skin test, compatible clinical/radiographic findings, and a known infectious contact.

    Conclusions:

    • Childhood tuberculosis exhibits age-dependent natural history and clinical expression.
    • Effective diagnosis relies on a combination of clinical, radiological, and epidemiological factors.
    • Children with TB tolerate standard adult treatment regimens, and chemotherapy is vital for preventing recent infections, even with BCG vaccination.