具有接种与潜伏期的SVEIR模型稳定性研究

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摘  要:该文建立一类具有接种与潜伏期的SVEIR仓室模型,利用再生矩阵的方法求出模型的基本再生数,通过基本再生数确定模型的传播动力学。当R0≤1时,系统的无病平衡点是全局渐近稳定的;当R0>1时,系统的地方病平衡点是全局渐近稳定的。

关键词:传染病模型;基本再生数;Lyapunov泛函;全局稳定性;平衡点

中图分类号:R183        文献标志码:A         文章编号:2095-2945(2023)16-0016-04

Abstract: In this paper, a kind of SVEIR compartmental model with inoculation and incubation period is established, the basic reproduction number of the model is obtained by the method of reproducing matrix, and the propagation dynamics of the model is determined by the basic reproduction number. If R0≤1, then the disease free equilibrium is globally asymptotically stable, and if R0>1, then the endemic equilibrium is globally asymptotically stable.

Keywords: models of epidemic diseases; basic reproduction number; Lyapunov functional; global stability; equilibrium point

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