Effectiveness of Bacille Calmette-Guerin vaccination policies in reducing infection and mortality of COVID-19: a systematic review.
Joseph Christian ObnialMystie SuzukiCatherine Joy EscuadraJanine Trixia AustriaMa Jamaica Monique PonceElaine CunananPublished in: Global health research and policy (2022)
The lower incidence and mortality of COVID-19 in countries with mandated BCG vaccination may not solely be attributable to BCG vaccination policies, but there is still some evidence that demonstrates a possible protective effect. Clinical trials must be continued before recommendations of BCG vaccinations are to be used as an alternative or booster vaccine against COVID-19.