Mathematical analysis of a tuberculosis model with differential infectivity

被引:40
|
作者
Bowong, Samuel [1 ]
Tewa, Jean Jules [2 ]
机构
[1] Univ Douala, Fac Sci, Dept Math & Comp Sci, Lab Appl Math, Douala, Cameroon
[2] Univ Yaounde I, Dept Math & Phys, Natl High Sch Polytech, Yaounde, Cameroon
关键词
Lyapunov functions; Stability; Epidemiological models; Tuberculosis; LYAPUNOV FUNCTIONS; STABILITY ANALYSIS; GLOBAL PROPERTIES; SYSTEMS; DYNAMICS; SEIR;
D O I
10.1016/j.cnsns.2009.02.017
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
This paper deals with the global properties of a tuberculosis model with mass action incidence and two differential infectivity. The direct Lyapunov method enables us to prove that the considered model is globally stable: There is always a globally asymptotically stable equilibrium state. Depending on the value of the basic reproduction number R-0, this state can be either endemic (R-0 > 1), or infection-free (R-0 <= 1). Numerical results are provided to illustrate analytical results. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:4010 / 4021
页数:12
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