Hussain A, Sarfaraz S, Anis S, Shaikh Q, Rahim A, Behram S, Shah R, Khan O. Breakthrough COVID-19 infections – Analyzing our experience. Pak J Med Sci [Internet]. 2023Aug.2 [cited 2024May18];39(5). Available from: https://pjms.org.pk/index.php/pjms/article/view/6724