人类来源 严重急性呼吸系统综合征 冠状病毒 2 气溶传输到远程哨兵仓鼠
Chad J Roy1, Michael R Barer2,3, Veronica Ueckermann4
1Center for Airborne Infection and Transmission Science, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Open forum infectious diseases
|April 21, 2025
概括
这项研究表明,传染性严重急性呼吸综合征冠状病毒2 (SARS-CoV-2) 可以通过建筑通风系统传播. 被暴露在患者空气中的哨兵仓鼠产生了抗体,支持病毒在空气中传播.
科学领域:
- 环境健康 环境健康
- 病毒学 病毒学
- 传染病流行病学 传染病流行病学
背景情况:
- 通过建筑通风系统传播严重急性呼吸综合征冠状病毒2 (SARS-CoV-2) 的情况仍在调查中.
- 这项研究适应了南非空气传播感染研究 (AIR) 设施,最初用于结核病,以调查人对动物 (H2A) SARS-CoV-2 传播.
研究的目的:
- 通过建筑物通风系统调查由生物气溶介导的SARS-CoV-2从受感染的人类传播到动物的可能性.
- 为了评估SARS-CoV-2在空气中的微粒中的传染性,在受控环境中延长运输距离.
主要方法:
- 新确诊的SARS-CoV-2患者被安置在AIR设施中,他们的病房空气不断排放到含有仓鼠的动物暴露室.
- 总共有216只金色的叙利亚仓鼠被暴露在混合患者病房排气中长达4天,随后进行了为期3周的抗体发育观察期.
- 动物血清分析了抗SARS-CoV-2免疫球蛋白G和斑块减少中和活性,并检查了肺组织的病理学.
主要成果:
- 七名患者在研究期间贡献了400多个住院小时.
- 58%的暴露子产生了抗SARS-CoV-2免疫球蛋白G,这表明血清转化.
- 在使用来自7只高滴度动物的血清进行的斑块减少试验中检测到中和活性.
结论:
- 这些发现支持这样的假设,即传染性SARS-CoV-2生物气溶可以通过建筑通风在长途运输中保持生命力.
- 在哨戒动物中观察到的血清转化与空气传播感染的概念一致,这种感染发生在随机上,并可能依赖于剂量.
- 需要进一步的研究,以充分阐明这种H2A传播模型中生物气溶特性和由此产生的感染之间的关系.
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