Javaid MM, Hyder M, Fazal A, Chaudhary FA, Farooq F. Omicron-The Variant of Concern Knocks the Door of Pakistan. Pak J Public Health [Internet]. 2022 Apr. 4 [cited 2025 Mar. 23];11(4):201-3. Available from: https://pjph.org/pjph/article/view/941