Testing the efficacy of homemade masks: would they protect in an influenza pandemic?
Testing the efficacy of homemade masks: would they protect in an influenza pandemic?
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DOI：
10.1017/dmp.2013.43
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发表时间：
2013-08-01
影响因子：
2.7
通讯作者：
Bennett, Allan
中科院分区：
文献类型：
--
作者：
Davies, Anna;Thompson, Katy-Anne;Bennett, Allan
目的：本研究考察自制口罩作为商用口罩的替代品。方法：几种家用材料对细菌和病毒气溶胶的阻隔能力进行了评估。21名健康志愿者用棉质t恤自制口罩；然后对口罩进行了适应性测试。使用几种空气采样技术比较了佩戴自制口罩、外科口罩和不戴口罩的健康志愿者咳嗽中分离出的微生物数量。结果：自制口罩的中位拟合因子为医用口罩的一半。这两种口罩都显著减少了志愿者排出的微生物数量，尽管医用口罩在阻止传播方面的效果是自制口罩的3倍。结论：自制口罩只能作为预防个体飞沫传播的最后手段，但总比没有防护好。
OBJECTIVE: This study examined homemade masks as an alternative to commercial face masks.METHODS: Several household materials were evaluated for the capacity to block bacterial and viral aerosols. Twenty-one healthy volunteers made their own face masks from cotton t-shirts; the masks were then tested for fit. The number of microorganisms isolated from coughs of healthy volunteers wearing their homemade mask, a surgical mask, or no mask was compared using several air-sampling techniques.RESULTS: The median-fit factor of the homemade masks was one-half that of the surgical masks. Both masks significantly reduced the number of microorganisms expelled by volunteers, although the surgical mask was 3 times more effective in blocking transmission than the homemade mask.CONCLUSION: Our findings suggest that a homemade mask should only be considered as a last resort to prevent droplet transmission from infected individuals, but it would be better than no protection.