Urban density and COVID-19: understanding the US experience.

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Felipe Carozzi, Sandro Provenzano, Sefi Roth
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引用次数: 0

Abstract

This paper revisits the debate around the link between population density and the severity of COVID-19 spread in the USA. We do so by conducting an empirical analysis based on graphical evidence, regression analysis and instrumental variable strategies borrowed from the agglomeration literature. Studying the period between the start of the epidemic and the beginning of the vaccination campaign at the end of 2020, we find that the cross-sectional relationship between density and COVID-19 deaths changed as the year evolved. Initially, denser counties experienced more COVID-19 deaths. Yet, by December, the relationship between COVID deaths and urban density was completely flat. This is consistent with evidence indicating density affected the timing of the outbreak-with denser locations more likely to have an early outbreak-yet had no influence on time-adjusted COVID-19 cases and deaths. Using data from Google, Facebook, the US Census and other sources, we investigate potential mechanisms behind these findings.

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城市密度与 COVID-19:了解美国的经验。
本文重新讨论了人口密度与 COVID-19 在美国传播的严重程度之间的关系。为此,我们借鉴了集聚文献中的图表证据、回归分析和工具变量策略,进行了实证分析。通过研究从疫情开始到 2020 年底疫苗接种活动开始这段时间,我们发现密度与 COVID-19 死亡人数之间的横截面关系随着年份的变化而变化。最初,密度较大的县的 COVID-19 死亡人数较多。然而,到了 12 月份,COVID 死亡人数与城市密度之间的关系完全趋于平稳。这与有证据表明密度会影响疫情爆发的时间--密度较高的地区更有可能在早期爆发疫情--但对经过时间调整的 COVID-19 病例和死亡人数却没有影响的情况相吻合。利用谷歌、Facebook、美国人口普查和其他来源的数据,我们研究了这些发现背后的潜在机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
期刊介绍: ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.
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