S. . Basavewowdanadoddi Marinaik, A. . Bhaskar, P. . . Chinnaiyan, and P. Chandrasekaran, “Does BCG Or MMR Or Routine Vaccination Coverage Protect Against COVID Infection And Mortality In India?”, Natl J Community Med, vol. 13, no. 11, pp. 840–843, Nov. 2022.