Nontuberculous mycobacterial infection in children: a prospective national study

Christopher C Blyth1, Emma J Best, Cheryl A Jones

  • 1Department of Immunology and Infectious Diseases, Sydney Children's Hospital, New South Wales, Australia.

Insights

Nontuberculous mycobacterial (NTM) infections in Australian children are rare, often affecting young, healthy individuals. Complete surgical excision offers the best treatment success, though recurrence remains a concern.

Area of Science:

  • Pediatric Infectious Diseases
  • Microbiology
  • Epidemiology

Background:

  • Nontuberculous mycobacterial (NTM) infections in Australian children lack established epidemiological data and management guidelines.
  • Understanding the scope of NTM disease in this demographic is crucial for public health.

Purpose of the Study:

  • To investigate the epidemiology, clinical presentation, and management outcomes of nontuberculous mycobacterial infections in Australian children.
  • To identify risk factors and treatment efficacies for NTM infections in pediatric populations.

Main Methods:

  • A nationwide active surveillance network identified pediatric NTM cases from July 2004 to June 2007.
  • Detailed clinical data, including diagnosis, treatment, and outcomes, were collected from reported cases.

Main Results:

  • 102 pediatric NTM cases were analyzed, with lymphadenitis being the most common presentation (68 cases).
  • Mycobacterium avium-intracellulare complex was the most frequently isolated NTM species (48.5%).
  • Complete surgical excision demonstrated a significantly higher treatment success rate (OR: 9.48) compared to other therapies.

Conclusions:

  • The incidence of NTM infection in Australian children is estimated at 0.84 per 100,000.
  • Infections predominantly affect young children without significant predisposing conditions.
  • Despite treatment, a recurrence rate of 23.4% was observed, highlighting the need for effective management strategies.
Abstract

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