Comparative Analysis of Epidemiological & Clinical Trends Across the First, Second and Third Waves of COVID-19: Insights from a Tertiary Care Hospital. African Journal of Biomedical Research, [S. l.], v. 27, n. 4S, p. 238–247, 2024. DOI: 10.53555/AJBR.v27i4S.3564. Disponível em: https://africanjournalofbiomedicalresearch.com/index.php/AJBR/article/view/3564.. Acesso em: 17 jun. 2025.