一类具有垂直传染与脉冲免疫的SEIR传染病模型的全局分析  

GLOBAL ANALYSIS OF AN SEIR EPIDEMIC DISEASE MODEL WITH VERTICAL TRANSMISSION AND PULSE VACCINATION

作　　者：刘开源[1] 陈兰荪[2] 

机构地区：[1]鞍山师范学院数学系,鞍山114007 [2]大连理工大学应用数学系,大连116024

出　　处：《系统科学与数学》2010年第3期323-333,共11页Journal of Systems Science and Mathematical Sciences

基　　金：国家自然科学基金(10671001;10971001)资助项目

摘　　要：考虑了一个具有垂直传染与积分时滞的SEIR传染病动力学模型.分析了该模型在脉冲免疫接种条件下的动力学行为,获得了传染病灭绝的充分条件,进而运用脉冲时滞泛函微分方程理论,获得了含有时滞的系统持久性的充分条件,并且证明了积分时滞与脉冲免疫能对模型的动力学行为产生显著的影响.In this paper, an SEIR epidemic disease model with integral delay and vertical transmission is considered, and dynamics behaviors of the model under pulse vaccination are analyzed. The sufficient condition for infection-extinction is obtained. Then, by using the theory on delay functional and impulsive differential equation theory, the sufficient condition of the permanence for the system with time delay is and pulse vaccination can bring obvious effects on given. Finally, it is shown that time delays the dynamics behaviors of the model.

关 键 词：垂直传染 脉冲免疫 持久性 积分时滞 全局吸引性 

分 类 号：O242.1[理学—计算数学]