IQBAL, M. N. COVID-19 Pandemic: Public Health Impact of SARS-CoV-2 Variants. PSM Biological Research, [S. l.], v. 7, n. 1, p. 49–51, 2022. Disponível em: https://psmjournals.org/index.php/biolres/article/view/610. Acesso em: 19 may. 2024.