Burhan, Erlina, and Rizky Abi Rachmadi. “Omicron Surge and the Future of COVID-19 Vaccinations”. Medical Journal of Indonesia 31, no. 1 (April 22, 2022): 80-4. Accessed April 26, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/6066.