Airborne infection risks of SARS-CoV-2 in U.S. schools and impacts of different intervention strategies.
Airborne infection risks of SARS-CoV-2 in U.S. schools and impacts of different intervention strategies.
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DOI：
10.1016/j.scs.2021.103188
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发表时间：
2021-11
影响因子：
11.7
通讯作者：
Zhu S
中科院分区：
文献类型：
--
作者：
Xu Y;Cai J;Li S;He Q;Zhu S
在当前的COVID-19大流行期间，随着学校继续重新开学并恢复面对面教学，SARS-CoV-2潜在的空气传播引发了人们的担忧。了解不同流行病学情景下SARS-CoV-2的空气传播风险和操作策略，对于学校做出明智的决策以降低感染风险至关重要。通过基于场景的分析，本研究估算了111485所美国公立和私立学校的SARS-CoV-2空气传播风险，并评估了不同干预策略的影响，包括增加通风、空气过滤和混合学习。90%以上县的学校感染风险高于1%，说明实施干预策略的重要性。在考虑的策略中，空气过滤被发现是最有效的：使用MERV 13时，学校的平均感染风险比使用增加通风和混合学习策略的风险水平分别低30%以上。大多数学校需要采取综合干预策略，确保感染风险低于1%。研究结果有助于了解不同情况下学校空气传播风险，并可指导学校和决策者制定有效的运营策略以维护环境卫生。
The potential airborne transmission of SARS-CoV-2 has triggered concerns as schools continue to reopen and resume in-person instruction during the current COVID-19 pandemic. It is critical to understand the risks of airborne SARS-CoV-2 transmission under different epidemiological scenarios and operation strategies for schools to make informed decisions to mitigate infection risk. Through scenario-based analysis, this study estimates the airborne infection risk of SARS-CoV-2 in 111,485 U.S. public and private schools and evaluates the impacts of different intervention strategies, including increased ventilation, air filtration, and hybrid learning. Schools in more than 90% of counties exhibit infection risk of higher than 1%, indicating the significance of implementing intervention strategies. Among the considered strategies, air filtration is found to be most effective: the school average infection risk when applying MERV 13 is over 30% less than the risk levels correlating with the use of increased ventilation and hybrid learning strategies, respectively. For most schools, it is necessary to adopt combined intervention strategies to ensure the infection risk below 1%. The results provide insights into airborne infection risk in schools under various scenarios and may guide schools and policymakers in developing effective operations strategies to maintain environmental health.
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