Introduction
tuberculosis, coronavirus disease 2019
CORONAVIRUS DISEASE 2019, TUBERCULOSIS
Bacille Calmette-Guérin (BCG) vaccine is extensively and safely used in children in over 150 countries, to protect against tuberculosis (TB).BRACE (BCG vaccination to reduce the impact of COVID-19 in healthcare workers) is a multicentre randomized controlled trial (ClinicalTrials.gov NCT04327206; date of registration 31/03/2020) that investigated whether BCG vaccination protects against coronavirus disease 2019 (Covid-19).