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arXiv 2008.00826physics.soc-phcs.SIcs.SYeess.SY
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具有无症状载体的时间网络上的广义SIS流行病模型及衰减率的讨论

A Generalized SIS Epidemic Model on Temporal Networks with Asymptomatic Carriers and Comments on Decay Ratio

Ashish R. Hota, Kavish Gupta

摘要:

我们研究了时间网络上的一类SIS流行病,并提出了一个新的活动驱动的自适应流行病模型,该模型捕捉了网络中无症状和传染性个体的影响。在所提出的模型中,被称为A-SIYS流行病,每个节点可以处于三种可能的状态:易感,无症状或无症状感染和有症状或有症状感染。无症状和有症状的个体都具有传染性。我们发现,拟议的A-SIYS流行病捕获几个完善的流行病模型作为特例,并获得充分条件,在此条件下,疾病得到根除诉诸平均场近似。此外,我们强调了一个潜在的不准确性,在活动驱动的自适应SIS(A-SIS)模型(Ogura et.例如,2019年),并提出了一个更一般的版本,他们的结果。我们数值说明了A-SIS传染病模型中感染节点比例的演化,并表明(Ogura et.例如,2019)往往未能捕捉到与我们的结果相反的流行病的行为。

英文摘要:

We study the class of SIS epidemics on temporal networks and propose a new activity-driven and adaptive epidemic model that captures the impact of asymptomatic and infectious individuals in the network. In the proposed model, referred to as the A-SIYS epidemic, each node can be in three possible states: susceptible, infected without symptoms or asymptomatic and infected with symptoms or symptomatic. Both asymptomatic and symptomatic individuals are infectious. We show that the proposed A-SIYS epidemic captures several well-established epidemic models as special cases and obtain sufficient conditions under which the disease gets eradicated by resorting to mean-field approximations. In addition, we highlight a potential inaccuracy in the derivation of the upper bound on the decay ratio in the activity-driven adaptive SIS (A-SIS) model in (Ogura et. al., 2019) and present a more general version of their result. We numerically illustrate the evolution of the fraction of infected nodes in the A-SIS epidemic model and show that the bound in (Ogura et. al., 2019) often fails to capture the behavior of the epidemic in contrast with our results.

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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