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建立临时病床对新发传染病动力学的重要性模型。

Modeling the importance of temporary hospital beds on the dynamics of emerged infectious disease.

机构信息

Department of Mathematics, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India.

出版信息

Chaos. 2021 Oct;31(10):103125. doi: 10.1063/5.0064732.

Abstract

To explore the impact of available and temporarily arranged hospital beds on the prevention and control of an infectious disease, an epidemic model is proposed and investigated. The stability analysis of the associated equilibria is carried out, and a threshold quantity basic reproduction number ( R) that governs the disease dynamics is derived and observed whether it depends both on available and temporarily arranged hospital beds. We have used the center manifold theory to derive the normal form and have shown that the proposed model undergoes different types of bifurcations including transcritical (backward and forward), Bogdanov-Takens, and Hopf-bifurcation. Bautin bifurcation is obtained at which the first Lyapunov coefficient vanishes. We have taken advantage of Sotomayor's theorem to establish the saddle-node bifurcation. Numerical simulations are performed to support the theoretical findings.

摘要

为了探究现有和临时调配的医院床位对传染病防控的影响,建立并研究了一个传染病模型。对相关平衡点的稳定性进行了分析,推导出了控制疾病动态的阈值基本再生数(R),并观察了它是否同时取决于现有和临时调配的医院床位。我们利用中心流形理论推导出了正则形式,并表明所提出的模型经历了不同类型的分岔,包括跨临界(后向和前向)、Bogdanov-Takens 和 Hopf 分岔。在倍化分岔处,第一李雅普诺夫系数为零。我们利用 Sotomayor 定理确定了叉型分岔。数值模拟验证了理论结果。

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