Modelling of Malaria Transmission Using Delay Differential Equation
Mathematical Modelling and Applications
Volume 5, Issue 3, September 2020, Pages: 167-175
Received: May 10, 2020;
Accepted: Jul. 14, 2020;
Published: Aug. 4, 2020
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Kipkirui Mibei, Department of Mathematics, Faculty of Science and Technology, University of Kabianga, Kericho, Kenya
Kirui Wesley, Department of Mathematics, Faculty of Science South Eastern, Kenya University, Kitui, Kenya
Adicka Daniel, Department of Mathematics, Faculty of Science and Technology, University of Kabianga, Kericho, Kenya
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Malaria is one of the major causes of deaths and ill health in endemic regions of sub-Saharan Africa and beyond despite efforts made to prevent and control its spread. Epidemiological models on how malaria is spread have made a substantial contribution on the understanding of disease changing aspects. Previous researchers have used Susceptible –Exposed-Infectious-Recovered (SEIR) model to explain how malaria is spread using ordinary differential equations. In this paper we develop mathematical SEIR model to define the dynamics of the spread of malaria using Delay differential equations with four control measures such as long lasting treated insecticides bed nets, intermittent preventive treatment of malaria in pregnant women (IPTP), intermittent preventive treatment of malaria in infancy (IPTI) and indoor residual spraying. The model is analyzed and reproduction number derived using next generation matrix method and its stability is checked by Jacobean matrix. Positivity of solutions and boundedness of the model is proved. We show that the disease free equilibrium is locally asymptotically stable if R0<1 (R0 – reproduction number) and is unstable if R0>1. Numerical simulation shows that, with proper treatment and control measures put in place the disease is controlled.
Stability, Basic Reproduction Number, Delay Differential Equations
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Modelling of Malaria Transmission Using Delay Differential Equation, Mathematical Modelling and Applications.
Vol. 5, No. 3,
2020, pp. 167-175.
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