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Neonatal BCG has no effect on allergic sensitization and suspected food allergy until 13 months

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  1. The validity of register data to identify children with atopic dermatitis, asthma or allergic rhinoconjunctivitis

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  2. Inappropriate reporting of clinical trials

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  • Lisbeth Marianne Thøstesen
  • Henrik Fomsgaard Kjaer
  • Gitte Thybo Pihl
  • Thomas Nørrelykke Nissen
  • Nina Marie Birk
  • Jesper Kjaergaard
  • Aksel Karl Georg Jensen
  • Peter Aaby
  • Annette Wind Olesen
  • Lone Graff Stensballe
  • Dorthe Lisbeth Jeppesen
  • Christine Stabell Benn
  • Poul-Erik Kofoed
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BACKGROUND: Vaccination with Bacillus Calmette-Guérin (BCG) is used in many countries as protection against tuberculosis. Studies have suggested that BCG may also have non-specific effects, reducing non-tuberculosis mortality, morbidity, and atopic manifestations. In this study we evaluated the effect of neonatal BCG vaccination on allergic sensitization and suspected food allergy at 13 months of age.

METHODS: The Danish Calmette Study was conducted from 2012-2015 at three Danish hospitals. Within 7 days of birth, the 4262 newborns of 4184 included mothers were randomized 1:1 to BCG or to a no-intervention control group. Exclusion criteria were gestational age <32 weeks, birth weight <1000 g, known immunodeficiency, or no Danish-speaking parent. Follow-up information was collected through telephone interviews at 3 and 13 months of age. Subgroups of participants were offered blood sampling at 13 months of age.

RESULTS: By 13 months of age the parents and/or general practitioners of 5.6% (117/2089) of the children in the BCG group and 6.1% (126/2061) of the control group suspected food allergy, resulting in a risk ratio comparing BCG-vaccinated children with control children of 0.91 (95% CI 0.71 to 1.16). Among 1370 blood samples, sensitization (Phadiatop Infant > 0.35 kUA/l) was found in 55/743 (7.4%) children in the BCG group and 50/627 (8.0%) of the control group (risk ratio 0.94 (0.65 to 1.36)).

CONCLUSION: In this randomized clinical trial neonatal BCG had no significant effect on suspected food allergy or on sensitization at 13 months of age. This article is protected by copyright. All rights reserved.

Original languageEnglish
JournalPediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology
Issue number6
Pages (from-to)588-596
Publication statusPublished - 1 Sep 2017

    Research areas

  • Journal Article

ID: 50663294