HASSAN, T. A Global Overview on COVID-19 Pandemic: Vaccines and New Variants. Pakistan Journal of Medicine and Dentistry, [S. l.], v. 11, n. 1, p. 89–93, 2024. DOI: 10.36283/PJMD11-1/015. Disponível em: http://ojs.zu.edu.pk/ojs/index.php/pjmd/article/view/1360. Acesso em: 19 may. 2024.