Dr. Bedanta Roy, Kee Kah Wei. An insight in Omicron variant and the effectiveness of available vaccines for COVID-19. Pakistan Journal of Medical & Health Sciences [Internet]. 2023 Jan. 29 [cited 2024 Nov. 21];16(06):Letter To Editor. Available from: https://mail.pjmhsonline.com/index.php/pjmhs/article/view/3702