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Recurrent culture-confirmed tuberculosis in human immunodeficiency virus-infected children

H Simon Schaaf1, Sara Krook, Dete W Hollemans

  • 1Department of Paediatrics and Child Health, Stellenbosch University, Tygerberg, South Africa.

The Pediatric Infectious Disease Journal
|August 12, 2005
PubMed

Insights

Recurrent tuberculosis (TB) is common in children with human immunodeficiency virus (HIV). This study found that both TB relapse and reinfection occur in these vulnerable children.

Area of Science:

  • Pediatric infectious diseases
  • HIV/AIDS research
  • Tuberculosis epidemiology

Background:

  • Recurrent tuberculosis (TB) is more prevalent in adults with human immunodeficiency virus (HIV) compared to HIV-uninfected individuals.
  • Limited data exists on the recurrence patterns of TB specifically in pediatric populations.
  • Understanding TB recurrence in HIV-infected children is crucial for public health strategies.

Purpose of the Study:

  • To investigate the incidence and characteristics of recurrent TB in children diagnosed with culture-confirmed tuberculosis and HIV infection.
  • To differentiate between relapse and reinfection as causes of recurrent TB in this cohort.

Main Methods:

  • A cohort of HIV-infected children with culture-confirmed TB was followed from 1992 to 2004.
  • Recurrence was defined as a new TB episode occurring at least 6 months after completing prior therapy.
  • Restriction fragment length polymorphism (RFLP) analysis was used to compare Mycobacterium tuberculosis strains between episodes.

Main Results:

  • Nine out of 87 HIV-infected children experienced a second TB episode; two had a third episode.
  • Bacteriological cure was documented in 7 episodes prior to recurrence.
  • RFLP and epidemiological data indicated both relapse (same strain) and reinfection (different strain) contributed to recurrent TB.

Conclusions:

  • Recurrent tuberculosis is a significant concern in HIV-infected children within high TB burden settings.
  • Both endogenous relapse and exogenous reinfection are mechanisms driving recurrent TB in this population.
  • Further research is needed to optimize management and prevention strategies for TB in HIV-infected children.
Abstract

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