Simulated Sunlight Rapidly Inactivates SARS-CoV-2 on Surfaces
Simulated Sunlight Rapidly Inactivates SARS-CoV-2 on Surfaces
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DOI：
10.1093/infdis/jiaa274
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发表时间：
2020-07-15
影响因子：
6.4
通讯作者：
Dabisch, Paul
中科院分区：
文献类型：
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作者：
Ratnesar-Shumate, Shanna;Williams, Gregory;Dabisch, Paul
先前的研究表明，在室内条件下，SARS-CoV-2在表面上长时间保持稳定。在本研究中，模拟阳光快速灭活SARS-CoV-2悬浮在模拟唾液或培养基中，并在不锈钢试样上干燥。当暴露于在晴朗的日子在海平面北纬40度的夏至代表的模拟阳光时，在模拟唾液中每6.8分钟和在培养基中每14.3分钟灭活90%的传染性病毒。在较低的模拟阳光水平下，也发生了显著的失活，尽管速率较慢。目前的研究提供了第一个证据，表明阳光可能会在表面上迅速传播SARS-CoV-2，这表明室内和室外环境之间的持久性和随后的暴露风险可能会有显着差异。此外，这些数据表明，自然阳光可能是有效的消毒剂污染的无孔材料。
Previous studies have demonstrated that SARS-CoV-2 is stable on surfaces for extended periods under indoor conditions. In the present study, simulated sunlight rapidly inactivated SARS-CoV-2 suspended in either simulated saliva or culture media and dried on stainless steel coupons. Ninety percent of infectious virus was inactivated every 6.8 minutes in simulated saliva and every 14.3 minutes in culture media when exposed to simulated sunlight representative of the summer solstice at 40 degrees N latitude at sea level on a clear day. Significant inactivation also occurred, albeit at a slower rate, under lower simulated sunlight levels. The present study provides the first evidence that sunlight may rapidly inactivate SARS-CoV-2 on surfaces, suggesting that persistence, and subsequently exposure risk, may vary significantly between indoor and outdoor environments. Additionally, these data indicate that natural sunlight may be effective as a disinfectant for contaminated nonporous materials.