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Related Experiment Videos

Tuberculin reactivity after neonatal percutaneous BCG immunisation

L P Ormerod1, C Palmer

  • 1Chest Clinic, Blackburn Royal Infirmary, Lancashire.

Archives of Disease in Childhood
|July 1, 1993
PubMed
Summary

Percutaneous BCG vaccination in Asian neonates resulted in more tuberculin-negative individuals but fewer abscesses compared to intradermal vaccination. This study highlights a potential alternative vaccination method with different outcomes.

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Area of Science:

  • Pediatrics
  • Immunology
  • Public Health

Background:

  • Bacille Calmette-Guérin (BCG) vaccination is crucial for preventing tuberculosis (TB) in neonates.
  • Traditional intradermal BCG vaccination can lead to adverse events like abscesses.
  • Exploring alternative BCG vaccination methods is important for improving safety and efficacy.

Purpose of the Study:

  • To evaluate the efficacy and safety of percutaneous BCG vaccination using a multiple puncture device in Asian neonates.
  • To compare tuberculin reactivity and the incidence of local adverse events following percutaneous versus intradermal BCG vaccination.

Main Methods:

  • A cohort of 348 neonates of Asian ethnicity received percutaneous BCG vaccination via a multiple puncture head.
  • Tuberculin testing was conducted 6-9 weeks post-vaccination to assess immune response.

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  • Incidence of post-vaccination abscesses was recorded and compared to historical intradermal vaccination data.

    • Main Results:

    • 15.8% (55 out of 348) of neonates were tuberculin negative 6-9 weeks after percutaneous BCG vaccination.
    • This proportion of tuberculin negativity was significantly higher compared to rates observed after intradermal BCG vaccination.
    • The incidence of vaccination-site abscesses was significantly lower with the percutaneous method.

    Conclusions:

    • Percutaneous BCG vaccination using a multiple puncture technique in Asian neonates elicits a different immune response profile, with higher tuberculin negativity.
    • This method demonstrates a significant reduction in abscess formation, suggesting improved local tolerance.
    • Percutaneous BCG vaccination may represent a viable alternative to intradermal administration, warranting further investigation into its long-term protective efficacy against tuberculosis.