The Effectiveness Of Government Masking Mandates On COVID-19 County-Level Case Incidence Across The United States, 2020
The Effectiveness Of Government Masking Mandates On COVID-19 County-Level Case Incidence Across The United States, 2020
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DOI：
10.1377/hlthaff.2021.01072
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发表时间：
2022-03-01
期刊：
影响因子：
9.7
通讯作者：
Rubin, David M.
中科院分区：
文献类型：
--
作者：
Huang, Jing;Fisher, Brian T.;Rubin, David M.
已经积累了在个人层面上对SARS-CoV-2传播进行掩蔽的有效性的证据，但社区层面授权的额外好处不太确定。在这项对2020年3月21日至10月20日期间来自412个美国县的匹配队列进行的观察性研究中，我们估计了县级公共掩蔽任务与每日COVID-19病例发病率之间的关联。平均而言，与未蒙面县相比，蒙面县每10万人的每日病例发病率在干预后4周下降了25%，6周下降了35%，6周下降了18%。在人口密度和政治倾向不同的地区，有利的影响也各不相同。掩蔽任务的影响最集中的是在城市县;任务的好处可能是更强的在亲南的县。尽管利益并非在所有地区平均分配，但在COVID-19大流行的早期，掩蔽命令有利于减少社区病例发生率。
Evidence for the effectiveness of masking on SARS-CoV-2 transmission at the individual level has accumulated, but the additional benefit of community-level mandates is less certain. In this observational study of matched cohorts from 412 US counties between March 21 and October 20, 2020, we estimated the association between county-level public masking mandates and daily COVID-19 case incidence. On average, the daily case incidence per 100,000 people in masked counties compared with unmasked counties declined by 25 percent at four weeks, 35 percent at six weeks, and 18 percent across six weeks postintervention. The beneficial effect varied across regions of different population densities and political leanings. The most concentrated effects of masking mandates were seen in urban counties; the benefit of the mandates was potentially stronger within Republican-leaning counties. Although benefits were not equally distributed in all regions, masking mandates conferred benefit in reducing community case incidence during an early period of the COVID-19 pandemic.