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气溶液中的SARS-CoV-2在口罩上的稳定性和转移到皮肤上的稳定性
Jin Pan1, Selma Gmati2, Bryce A Roper2
1Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States.
Environmental science & technology
|July 3, 2023
概括
面具显示SARS-CoV-2通过fomites传播的风险很小. 传染性病毒在N95和手术口罩上1小时后无法检测到,从其他口罩类型的传输有限.
科学领域:
- 病毒学 病毒学
- 材料科学 材料科学 材料科学
- 公共卫生 公共卫生
背景情况:
- 面具对于减轻SARS-CoV-2传播至关重要.
- 面具作为SARS-CoV-2的传染剂的作用已被理论化,但未经实验验证.
研究的目的:
- 调查不同类型的口罩可能作为SARS-CoV-2的发酵剂.
- 评估在气溶暴露后面具上的SARS-CoV-2的传染性和RNA稳定性.
主要方法:
- 在唾液中空气溶解的SARS-CoV-2通过真空通过六种口罩类型.
- 面具在28°C和80%的RH温度下化1小时.
- 病毒感染性和RNA稳定性通过化和RNA检测进行了评估.
- 评估了病毒RNA转移到人造皮肤的情况.
主要成果:
- 1小时后,N95和外科口罩上没有检测到传染性SARS-CoV-2.
- 在尼龙/斯潘德克斯口罩上观察到0.7 log10的传染性降低.
- 聚和棉的口罩没有减少感染力.
- 在所有口罩类型上,SARS-CoV-2 RNA在1小时内保持稳定.
- 病毒RNA转移到人造皮肤,但没有检测到传染性病毒.
结论:
- 通过气溶作为烟剂的口罩传播SARS-CoV-2的风险可能很低.
- 在测试条件下,感染性SARS-CoV-2从N95和手术口罩中没有恢复.
- 需要进一步的研究,才能充分理解面具中的虫传播动态.
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