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Dynamical and optimal control analysis of a seasonal Trypanosoma brucei rhodesiense model

1 Institution of Science and Technology (NM-AIST), School of Computational and Communication Science and Engineering, The Nelson Mandela African, P. O. Box 447, Arusha, Tanzania
2 Department of Mathematics and Statistics, Mbeya University of Science and Technology, College of Science and Technical Education, P. O. Box 131, Mbeya, Tanzania
3 Department of Basic Sciences, Botswana University of Agriculture and Natural Resources Private Bag 0027, Gaborone, Botswana
4 Department of Mathematics, University of Zimbabwe, P. O. Box MP 167, Harare, Zimbabwe

The effects of seasonal variations on the epidemiology of Trypanosoma brucei rhodesiense disease is well documented. In particular, seasonal variations alter vector development rates and behaviour, thereby influencing the transmission dynamics of the disease. In this paper, a mathematical model for Trypanosoma brucei rhodesiense disease that incorporates seasonal effects is presented. Owing to the importance of understanding the effective ways of managing the spread of the disease, the impact of time dependent intervention strategies has been investigated. Two controls representing human awareness campaigns and insecticides use have been incorporated into the model. The main goal of introducing these controls is to minimize the number of infected host population at low implementation costs. Although insecticides usage is associated with adverse effects to the environment, in this study we have observed that by totally neglecting insecticide use, effective disease management may present a formidable challenge. However, if human awareness is combined with low insecticide usage then the disease can be effectively managed.
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Keywords Trypanosoma brucei rhodesiense; seasonality; stability; optimal control

Citation: Mlyashimbi Helikumi, Moatlhodi Kgosimore, Dmitry Kuznetsov, Steady Mushayabasa. Dynamical and optimal control analysis of a seasonal Trypanosoma brucei rhodesiense model. Mathematical Biosciences and Engineering, 2020, 17(3): 2530-2556. doi: 10.3934/mbe.2020139


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This article has been cited by

  • 1. Mlyashimbi Helikumi, Moatlhodi Kgosimore, Dmitry Kuznetsov, Steady Mushayabasa, A fractional-order Trypanosoma brucei rhodesiense model with vector saturation and temperature dependent parameters, Advances in Difference Equations, 2020, 2020, 1, 10.1186/s13662-020-02745-3

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