Anyanwu, M.C., Neossi-Nguetchue, S.N., Moremedi, G.M. and Eegunjobi, A.S. 2024. Mathematical Model and Optimal Control of Covid-19 in Nigeria. Earthline Journal of Mathematical Sciences. 14, 3 (Mar. 2024), 421-441. DOI:https://doi.org/10.34198/ejms.14324.421441.