Roy, Bedanta, and Sellaiah S. Pillay. “Omicron Subvariants XBB, and BA.5: Current Perspective”. Quest International Journal of Medical and Health Sciences 5, no. 2 (December 31, 2022): 13-14. Accessed April 25, 2024. https://ojs.qiu.edu.my/journal/index.php/qijmhs/article/view/64.