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arXiv 2102.00671physics.soc-ph
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城市内人口密度和流动性在决定流行病传播方面的相互作用

Interplay between intra-urban population density and mobility in determining the spread of epidemics

Surendra Hazarie, David Soriano-Paños, Alex Arenas, Jesús Gómez-Gardeñes, Gourab Ghoshal

摘要:

在这项工作中,我们解决了城市地区人口密度中心之间的联系,以及这些中心之间的人流的性质,在塑造传染病发病的脆弱性。对四大洲163个城市进行的一项研究显示了一个普遍趋势,即在人口流动主要集中在高人口密度中心之间的城市,人类流动引起的风险增加。我们将我们的形式主义应用于SARS-COV-2在美国的传播,为观察到的城市间传播过程的异质性提供了一个合理的解释。有了这一见解,我们提出了现实的缓解策略(比封锁不那么严重),基于修改城市的流动性。我们的研究结果表明,最优控制策略涉及一个不对称的政策,限制进入最脆弱的地区,但允许居民继续他们通常的流动模式。

英文摘要:

In this work, we address the connection between population density centers in urban areas, and the nature of human flows between such centers, in shaping the vulnerability to the onset of contagious diseases. A study of 163 cities, chosen from four different continents reveals a universal trend, whereby the risk induced by human mobility increases in those cities where mobility flows are predominantly between high population density centers. We apply our formalism to the spread of SARS-COV-2 in the United States, providing a plausible explanation for the observed heterogeneity in the spreading process across cities. Armed with this insight, we propose realistic mitigation strategies (less severe than lockdowns), based on modifying the mobility in cities. Our results suggest that an optimal control strategy involves an asymmetric policy that restricts flows entering the most vulnerable areas but allowing residents to continue their usual mobility patterns.

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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