Bhatia, V., Parida, S. , Sahoo, D., Antony, A. and Mitra , A. 2022. Effectiveness of universal BCG immunisation in reducing the incidence and mortality of COVID-19: A secondary data analysis. Nigerian Medical Journal. 62, 2 (Apr. 2022), 60–65. DOI:https://doi.org/10.60787/nmj.v62i2.12.