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arXiv 2005.06933q-bio.PEphysics.soc-ph
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COVID-19流行病数据中出现的多项式增长趋势及其与基于Combustion的模型的协调

Emerging Polynomial Growth Trends in COVID-19 Pandemic Data and Their Reconciliation with Compartment Based Models

Katarina Bodova, Richard Kollar

摘要:

我们研究了2020年1月至5月在119个国家爆发的COVID-19大流行的报告数据。我们观察到,个别国家活跃病例的时间序列(确诊感染总数与报告死亡和康复病例总数之差)显示出与多项式增长的高度一致性,在后期流行阶段也显示出与指数衰减相结合的多项式增长。我们的结果也制定在隔间类型的流行病数学模型。在这些模型中,表征在晚期流行病阶段观察到的状态的通用标度可以被解释为相对繁殖数$R_0$的代数衰减为$T_M/t$,其中$T_M$是常数,$t$是流行病爆发的持续时间。我们展示了我们的研究结果如何应用于改善对报告的大流行数据的预测,并估计一些流行病参数。请注意,尽管该模型显示与报告的数据很好的一致,但我们并没有对流行病的实际规模做出任何声明,因为观察到的报告数据与人口中感染总人数的关系仍然是未知的。

英文摘要:

We study the reported data from the COVID-19 pandemic outbreak in January - May 2020 in 119 countries. We observe that the time series of active cases in individual countries (the difference of the total number of confirmed infections and the sum of the total number of reported deaths and recovered cases) display a strong agreement with polynomial growth and at a later epidemic stage also with a combined polynomial growth with exponential decay. Our results are also formulated in terms of compartment type mathematical models of epidemics. Within these models the universal scaling characterizing the observed regime in an advanced epidemic stage can be interpreted as an algebraic decay of the relative reproduction number $R_0$ as $T_M/t$, where $T_M$ is a constant and $t$ is the duration of the epidemic outbreak. We show how our findings can be applied to improve predictions of the reported pandemic data and estimate some epidemic parameters. Note that although the model shows a good agreement with the reported data we do not make any claims about the real size of the pandemics as the relation of the observed reported data to the total number of infected in the population is still unknown.

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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