Efficacy of Bacillus Calmette-Guérin (BCG) Vaccination in Reducing the Incidence and Severity of COVID-19 in High-Risk Population (BRIC): a Phase III, Multi-centre, Quadruple-Blind Randomised Control Trial.

Infect Dis Ther · 2022 · PMC9568923 · PMID 36242739

Europe PMC DOI

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might be significantno p-value reported

This might be significant since most of the protective efficacy of available vaccines has been shown to last for a much shorter duration, necessitating booster doses of vaccines to ensure a longer duration of protection from severe disease.

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