Dotia, A. K.Ibrahim, M. O.Ejieji, C. N.Bello, K. A.Ahmed, B. M.Ajanaku, B.Kazeem, A. B.Lawan, A. O.2019-05-172019-05-172019http://hdl.handle.net/123456789/1952In this paper, we present a deterministic model for the co-interaction of HBV and HIV in a population. Mathematical analyses are carried out, which determines the positivity of solution and optimal control. This study examined the effectiveness of the efforts put in place in eliminating the birth of prenatally infected chronic carrier mother, considering the efficacy of prophylactic vaccine against the incidence of new cases. The scheme shows that the disease can be resisted with vaccination(s) and treatment.enVaccinationTreatmentOptimal ControlCo-interactionArticle