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通过化在水中的SARS-CoV-2的无活化
Samendra Sherchan1,2, Luisa A Ikner3, Charles P Gerba3
1Department of Environmental Health Sciences, Tulane University, New Orleans, LA, 70112, USA. sshercha@tulane.edu.
Food and environmental virology
|July 8, 2023
概括
有效地使导致COVID-19的病毒SARS-CoV-2在游泳池水中失活. 这项研究表明,在典型的水平下,病毒迅速减少,减轻了娱乐用水传播的传播风险.
科学领域:
- 环境微生物学环境微生物学
- 病毒学 病毒学
- 公共卫生 公共卫生
背景情况:
- 严重急性呼吸系统综合征冠状病毒-2 (SARS-CoV-2) 存在于呼吸道分泌物和便中,构成通过娱乐用水传播的潜在风险.
- 呼吸系统病毒与游泳池中的感染和爆发有关,这突显了需要了解这些环境中的SARS-CoV-2无活化.
研究的目的:
- 为了研究化在游泳池水条件下无活化SARS-CoV-2的有效性.
- 确定所需的度和接触时间,以显著减少SARS-CoV-2.
主要方法:
- 实验是在室温的BSL-3实验室进行的.
- SARS-CoV-2 隔离hCoV-19/USA-WA1/2020暴露于水中特定的自由度,模拟典型的美国游泳池条件.
- 病毒无活化是通过日志减少随着时间的推移来衡量的.
主要成果:
- 在30秒暴露在2.05 mg/L自由下后,观察到SARS-CoV-2的3.5 log (超过99.9%) 的减少.
- 在2分钟内实现了超过4.17日志减少 (超过99.99%),达到检测极限.
结论:
- 在游泳池中使用标准的化方法可以有效地迅速使SARS-CoV-2无活化.
- 这些发现表明,当水有足够的化时,娱乐用水活动对SARS-CoV-2传播的风险较低.
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