Optimal control for disease vector management in SIT models: an integrodifference equation approach

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Abstract

Vector-borne diseases are a major public health concern inflicting high levels of disease morbidity and mortality. Vector control is one of the principal methods available to manage infectious disease burden. One approach, releasing modified vectors (such as sterile or GM mosquitoes) Into the wild population has been suggested as an effective method of vector control. However, the effects of dispersal and the spatial distribution of disease vectors (such as mosquitoes) remain poorly studied. Here, we develop a novel mathematical framework using an integrodifference equation (discrete in time and continuous in space) approach to understand the impact of releasing sterile insects into the wild population in a spatially explicit environment. We prove that an optimal release strategy exists and show how it may be characterized by defining a sensitivity variable and an adjoint system. Using simulations, we show that the optimal strategy depends on the spatially varying carrying capacity of the environment.

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Kura, K., Khamis, D., El Mouden, C., & Bonsall, M. B. (2019). Optimal control for disease vector management in SIT models: an integrodifference equation approach. Journal of Mathematical Biology, 78(6), 1821–1839. https://doi.org/10.1007/s00285-019-01327-6

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