BCG vaccination of healthcare workers does not reduce SARS-CoV-2 infections nor infection severity or duration: a randomised placebo-controlled trial https://www.medrxiv.org/content/10.1101/2022.12.12.22283282
BCG vaccination of healthcare workers does not reduce SARS-CoV-2 infections nor infection severity or duration: a randomised placebo-controlled trial https://www.medrxiv.org/content/10.1101/2022.12.12.22283282