Analysis of stability and bifurcation for an SEIV epidemic model with vaccination and nonlinear incidence rate

被引：0
|
作者：
Xueyong Zhou
Jingan Cui
机构：
[1] Nanjing Normal University,School of Mathematical Sciences
[2] Xinyang Normal University,College of Mathematics and Information Science
[3] Beijing University of Civil Engineering and Architecture,School of Science
来源：
Nonlinear Dynamics | 2011年 / 63卷
关键词：
Epidemic model; Backward bifurcation; Global stability; Nonlinear incidence rate; Bendixson criterion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, an SEIV epidemic model with vaccination and nonlinear incidence rate is formulated. The analysis of the model is presented in terms of the basic reproduction number R0. It is shown that the model has multiple equilibria and using the center manifold theory, the model exhibits the phenomenon of backward bifurcation where a stable disease-free equilibrium coexists with a stable endemic equilibrium for a certain defined range of R0. We also discuss the global stability of the endemic equilibrium by using a generalization of the Poincaré–Bendixson criterion. Numerical simulations are presented to illustrate the results.
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页码：639 / 653
页数：14
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