Keywords:
BCG; COVID‐19; SARS‐CoV‐2; T cell; cytokine; immunoregulation
Abstract:
Because of its beneficial off-target effects against non-mycobacterial infectious diseases, bacillus Calmette-Guérin vaccination might be an accessible early intervention to boost protection against novel pathogens. Multiple epidemiological studies and randomised controlled trials are investigating the protective effect of BCG against coronavirus disease 2019 (COVID-19).