Sahoo, Jyoti Prakash, Sudhanya Nath, Lipi Ghosh, and Kailash Chandra Samal. “Concepts of Immunity and Recent Immunization Programme Against COVID-19 in India”. Biotica Research Today 3, no. 2 (February 6, 2021): 103–106. Accessed May 19, 2024. https://biospub.com/index.php/biorestoday/article/view/728.