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Disseminated Bacillus Calmette-Guerin infection after BCG vaccination

Mohammad Sadegh Rezai1, Ghamartaj Khotaei, Setareh Mamishi

  • 1Department of Pediatrics, School of Medicine, Medical Sciences/University of Tehran, Tehran, Iran.

Journal of Tropical Pediatrics
|July 3, 2008
PubMed

Insights

Disseminated BCG infection is a rare but serious adverse reaction to the BCG vaccine in infants. Immune-compromised infants are at highest risk and respond poorly to standard treatments.

Area of Science:

  • Pediatric Infectious Diseases
  • Vaccine Safety
  • Immunology

Background:

  • Bacille Calmette-Guérin (BCG) vaccination is standard for newborns in Iran.
  • Systemic adverse reactions, like osteomyelitis and disseminated BCG infection, are rare but severe.
  • Disseminated BCG disease presents a significant clinical challenge in infants.

Purpose of the Study:

  • To investigate the characteristics and outcomes of disseminated BCG disease in young children.
  • To identify risk factors and assess treatment responses in affected infants.
  • To raise awareness of this rare but devastating complication.

Main Methods:

  • Retrospective study of 15 cases of disseminated mycobacterial disease in children under 72 months.
  • Data collected from 2004-2007.
  • Analysis of patient demographics, immune status, and treatment outcomes.

Main Results:

  • Disseminated BCG disease predominantly affected infants under 12 months (12/15 cases).
  • Male infants were more commonly affected (12/15).
  • Nine out of 15 patients had known primary immune deficiencies, including SCID, CGD, and HIV.

Conclusions:

  • Disseminated BCG disease is a rare, severe complication of BCG vaccination, particularly in immune-compromised infants.
  • Early consideration in the appropriate clinical setting is crucial.
  • Infants with severe immune compromise face poorer prognoses and respond less effectively to standard therapies.

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