Ranjan, Alok, Purushottam Kumar, Manisha Verma, Chandramani Singh, Sanjay Pandey, Bijaya Nanda Naik, Santosh Kumar Nirala, and Rajath Rao. “Role of BCG and Measles Vaccination in Protection Against COVID-19 Infection and Severity of the Disease: A Pilot Case-Control Study”. National Journal of Community Medicine 13, no. 02 (February 28, 2022): 108–113. Accessed May 5, 2024. https://njcmindia.com/index.php/file/article/view/160.