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arXiv 2209.14769q-bio.PEmath.PR
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时间依赖的非齐次SIR型随机流行病模型

Time-dependent non-homogeneous stochastic epidemic model of SIR type

Mireia Besalú, Giulia Binotto

摘要:

为了更好地描述疾病的传播,我们扩展了Tuckwell和Williams的离散时间随机SIR型传染病模型。我们假设依赖于时间的每日遭遇的数量,并包括一个参数来表示可能的隔离的传染性个人。我们提供了一个分析描述这个马尔可夫模型,并探讨其动态。导出了扩散近似和基本再生数。通过几个模拟,我们展示了疾病的演变是如何受到日常遭遇数量分布及其对时间的依赖性的影响。

英文摘要:

To better describe the spread of a disease, we extend a discrete time stochastic SIR-type epidemic model of Tuckwell and Williams. We assume the dependence on time of the number of daily encounters and include a parameter to represent a possible quarantine of the infectious individuals. We provide an analytic description of this Markovian model and investigate its dynamics. Both a diffusion approximation and the basic reproduction number are derived. Through several simulations, we show how the evolution of a disease is affected by the distribution of the number of daily encounters and its dependence on time.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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