摘要
给出一个带有接种疫苗的SIS流行病模型,并对它进行了分析,得出该模型有3个稳定点,其中1个无病平衡点及2个染病平衡点.
An SIS epidemic model with vaccination and temporary immunity is studied. The analyzing result shows that the model has three equilibria, where one is the disease-free equilibrium and two are epidemic equilibrium.
出处
《信阳师范学院学报（自然科学版）》
CAS
2009年第3期340-344,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
National Natural Science Foundation of China(10671166)
Natural Science Foundation of Henan Province(031202000)
关键词
接种
基本再生数
庞加莱指数
平衡点
稳定性
正不变集
vaccination
basic reproductive number
Polincare index
equilibria
stability
positively invariant
