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arXiv 2103.12848q-bio.PE
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从病原体的眼睛看流行病

Epidemics from the Eye of the Pathogen

Faryad Darabi Sahneh, William Fries, Joseph C. Watkins, Joceline Lega

摘要:

虽然疾病建模的一个共同趋势是开发越来越复杂的模型,但最近有人指出,从发病率与累积病例(ICC)平面来看,暴发似乎非常简单。本文通过分析累积病例域中的随机SIR(Susceptible,Infected,Adverted)模型,详细阐述了这一现象背后的理论。我们证明了与此模型相关联的马尔可夫链减少,在ICC平面,一个纯粹的出生链的累积数量的情况下,其限制导致一个独立的增量高斯过程,波动的确定性ICC曲线。我们计算了相关的方差,并量化了由于在有限的时间内估计发病率而产生的额外变异性。我们还说明了ICC概念对甲型流感和亚利桑那州COVID-19爆发的真实世界数据的普遍性。

英文摘要:

While a common trend in disease modeling is to develop models of increasing complexity, it was recently pointed out that outbreaks appear remarkably simple when viewed in the incidence vs. cumulative cases (ICC) plane. This article details the theory behind this phenomenon by analyzing the stochastic SIR (Susceptible, Infected, Recovered) model in the cumulative cases domain. We prove that the Markov chain associated with this model reduces, in the ICC plane, to a pure birth chain for the cumulative number of cases, whose limit leads to an independent increments Gaussian process that fluctuates about a deterministic ICC curve. We calculate the associated variance and quantify the additional variability due to estimating incidence over a finite period of time. We also illustrate the universality brought forth by the ICC concept on real-world data for Influenza A and for the COVID-19 outbreak in Arizona.

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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