Impact of recent BCG vaccination on level of anti-spike IgG
Prior to receiving COVID-19 vaccinations, participants were randomised to receive vaccination with BCG-Denmark (n=435) or saline placebo (n=439) as part of the BRACE trial (Comparison of anti-spike IgG antibody concentration following ChAdOx1-S or CoronaVac vaccination among healthcare workers in Brazil by BCG randomisation group.95% CI, 95% confidence interval; GMR, geometric mean ratio; Ig, immunoglobulin; No., number.