COVID-19: mask efficacy is dependent on both fabric and fit.
COVID-19: mask efficacy is dependent on both fabric and fit.
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DOI：
10.2217/fmb-2020-0292
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发表时间：
2021-01
影响因子：
3.1
通讯作者：
Sleator RD
中科院分区：
文献类型：
--
作者：
Darby S;Chulliyallipalil K;Przyjalgowski M;McGowan P;Jeffers S;Giltinan A;Lewis L;Smith N;Sleator RD
目标：口罩是我们对抗COVID-19的重要补充。本研究的目的是提出一种新的方法来测量口罩的性能，可以同时评估织物渗透和泄漏，由于配合不良。材料与方法：将合成气溶胶引入医用假人的肺中。一个锥形激光片围绕着假人的面部，在模拟呼吸过程中，它照亮了所排放的气溶胶。该系统演示了五个面具类型。结论：弯曲激光片突出了面罩织物的渗透和面罩边缘周围的泄漏。观察到材料渗透和泄漏的变化很大。口罩是遏制COVID-19传播的有效手段。然而，口罩的性能差异很大，这取决于它们的面料，以及它们如何适合在脸上。
Aim: Face masks are an important addition to our arsenal in the fight against COVID-19. The aim of this study is to present a novel method of measuring mask performance which can simultaneously assess both fabric penetration and leakage due to poor fit. Materials & methods: A synthetic aerosol is introduced into the lung of a medical dummy. A conical laser sheet surrounds the face of the dummy where it illuminates the aerosol emitted during a simulated breath. The system is demonstrated with five mask types. Conclusions: The curved laser sheet highlights both penetration through the mask fabric and leakage around the edges of the mask. A large variation in both material penetration and leakage was observed. Face masks are an effective means of stemming the spread of COVID-19. However, mask performance varies considerably depending on the fabric from which they are made, and how they fit on the face.
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