Kannan, D., Muppiri, S. and Reid, M. (2023) “Analysis of Potential Risk Factors of COVID-19 Based on Variants: Omicron, Delta, and Alpha”, Archives of Clinical and Biomedical Research, 7(6), pp. 590–603. Available at: https://www.fortunejournals.org/ojs/index.php/acbr/article/view/15043 (Accessed: 25 July 2026).