Quantifying population contact patterns in the United States during the COVID-19 pandemic.
Quantifying population contact patterns in the United States during the COVID-19 pandemic.
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DOI：
10.1038/s41467-021-20990-2
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发表时间：
2021-02-09
影响因子：
16.6
通讯作者：
Mahmud AS
中科院分区：
文献类型：
--
作者：
Feehan DM;Mahmud AS
SARS-CoV-2主要通过密切的人与人之间的互动传播。物理距离政策可以通过减少人群中这些相互作用的数量来控制SARS-CoV-2的传播。在这里，我们报告了四波接触调查的结果，这些调查旨在量化这些政策在美国新冠肺炎大流行期间的影响。我们在2020年3月22日至9月26日期间调查了9,743名受访者。我们发现，在美国，人际接触已大幅减少，与大流行前的水平相比，第一波疫情期间观察到的平均每日接触次数减少了82%(95%可信区间：80%-83%)。然而，我们发现，在随后的几波中，接触率有所增加。我们还发现，某些人口群体，包括45岁以下的人和男性，接触率明显高于其他人口。跟踪这些变化可以提供对物理距离政策影响的快速评估，并有助于识别高危人群。为了减少新冠肺炎的传播，已经广泛采取了物理距离措施。这项研究量化了美国人与人之间接触模式的变化，发现在3月份早期封锁期间，接触减少了82%，此后稳步上升。
SARS-CoV-2 is transmitted primarily through close, person-to-person interactions. Physical distancing policies can control the spread of SARS-CoV-2 by reducing the amount of these interactions in a population. Here, we report results from four waves of contact surveys designed to quantify the impact of these policies during the COVID-19 pandemic in the United States. We surveyed 9,743 respondents between March 22 and September 26, 2020. We find that interpersonal contact has been dramatically reduced in the US, with an 82% (95%CI: 80%–83%) reduction in the average number of daily contacts observed during the first wave compared to pre-pandemic levels. However, we find increases in contact rates over the subsequent waves. We also find that certain demographic groups, including people under 45 and males, have significantly higher contact rates than the rest of the population. Tracking these changes can provide rapid assessments of the impact of physical distancing policies and help to identify at-risk populations. Physical distancing measures have been widely adopted to reduce the spread of COVID-19. This study quantifies changes in interpersonal contact patterns in the US and finds an 82% reduction in contacts during early lockdowns in March and steady increases thereafter.
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