Optimal control and cost-effective analysis of malaria/visceral leishmaniasis co-infection.
In this paper, a deterministic model involving the transmission dynamics of malaria/visceral leishmaniasis co-infection is presented and studied. Optimal control theory is then applied to investigate the optimal strategies for curtailing the spread of the diseases using the use of personal protection, indoor residual spraying and culling of infected reservoirs as the system control variables. Various combination strategies were examined so as to investigate the impact of the controls on the spread of the disease. And we investigated the most cost-effective strategy of all the control strategies using three approaches, the infection averted ratio (IAR), the average cost-effectiveness ratio (ACER) and incremental cost-effectiveness ratio (ICER). Our results show that the implementation of the strategy combining all the time dependent control variables is the most cost-effective control strategy. This result is further emphasized by using the results obtained from the cost objective functional, the ACER, and the ICER.
Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, 66045, Kansas, United States of America.
Folashade B
FB
Agusto
Department of Mathematics and Statistics, College of Sciences, Sultan Qaboos University, P.O.Box 36, Al Khodh, Oman.
Ibrahim M
IM
ELmojtaba
D000465:Algorithms; D000818:Animals; D060085:Coinfection; D003198:Computer Simulation; D003362:Cost-Benefit Analysis; D004197:Disease Reservoirs; D006801:Humans; D007898:Leishmaniasis, Visceral / Q000517:prevention & control* / Q000635:transmission; D008288:Malaria / Q000517:prevention & control* / Q000635:transmission; D008962:Models, Theoretical; D000067393:Personal Protective Equipment