MATHEMATICAL MODEL FOR COVID-19-PNEUMONIA DYNAMICS WITH VACCINATION AND ANTIVIRAL THERAPY. The Journals of the Nigerian Association of Mathematical Physics, [S. l.], v. 73, p. 99–122, 2026. DOI: 10.60787/jnamp.vol73no.731. Disponível em: https://nampjournals.org.ng/index.php/home/article/view/731.. Acesso em: 26 oct. 2026.