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1.
Allergy ; 73(2): 498-504, 2018 02.
Article in English | MEDLINE | ID: mdl-28929567

ABSTRACT

BACKGROUND: Studies have suggested that Bacillus Calmette-Guérin (BCG) vaccination may reduce the risk of allergic diseases, including atopic dermatitis. METHODS: The Danish Calmette Study was conducted 2012-2015. Within 7 days of birth new-borns were randomised 1:1 to BCG or no BCG. Exclusion criteria were gestational age <32 weeks, birth weight <1000 g, known immunodeficiency or no Danish-speaking parent. Data were collected through telephone interviews and clinical examinations until 13 months. RESULTS: Clinical atopic dermatitis was diagnosed in 466/2,052 (22.7%) children in the BCG group and 495/1,952 (25.4%) children in the control group (RR = 0.90 [95% confidence intervals 0.80-1.00]). The effect of neonatal BCG vaccination differed significantly between children with atopic predisposition (RR 0.84 (0.74-0.95)) and children without atopic predisposition (RR 1.09 [0.88-1.37]) (test of no interaction, P = .04). CONCLUSION: Among children with atopic predisposition, the number-needed-to-treat with BCG to prevent one case of atopic dermatitis was 21 (12-76).


Subject(s)
BCG Vaccine/therapeutic use , Dermatitis, Atopic/prevention & control , Dermatitis, Atopic/epidemiology , Female , Humans , Infant , Infant, Newborn , Male , Netherlands/epidemiology
2.
Eur J Clin Microbiol Infect Dis ; 37(1): 29-41, 2018 Jan.
Article in English | MEDLINE | ID: mdl-28890996

ABSTRACT

Several studies have shown increased in vitro cytokine responses to non-related pathogens after Bacillus Calmette-Guérin (BCG) vaccination. A total of 158 infants (80 BCG administered within 7 days of birth; 78 controls) were bled 4 days post-randomization, and at age 3 and 13 months. Geometric mean concentrations of IL-1ß, TNF-α, IL-6 (24 h stimulation) and IFN-γ, IL-10, IL-17, IL-22 (96 h stimulation) in response to in vitro stimulation with RPMI, LPS, PHA, Escherichia coli, Streptococcus pneumoniae, Candida albicans and BCG were compared among BCG vaccinated children and controls. BCG vaccination did not affect in vitro cytokine production, except IFN-γ and IL-22 response to BCG. Stratifying for 'age at randomization' we found a potentiating effect of BCG on cytokine production (TNF-α, IL-6, IL-10) in the 4 days post randomization stimulations, among children who were vaccinated at age 2-7 days versus age 0-1 days. BCG vaccination did not potentiate cytokine production to non-BCG antigens. At 4 days post randomization, BCG was associated with higher cytokine production in the later randomized children.


Subject(s)
BCG Vaccine/immunology , Cytokines/blood , Mycobacterium bovis/immunology , BCG Vaccine/administration & dosage , Candida albicans/immunology , Escherichia coli/immunology , Female , Humans , Infant, Newborn , Male , Streptococcus pneumoniae/immunology , Vaccination
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