Emerg Infect Dis:鞋底可传播病毒!火神山医院病房样本分析:4米内仍有新冠病毒

2020-04-15 xujing 中国循环杂志

近日,中国人民解放军军事医学科学院学者发表的一项新研究通过分析火神山医院病房内样本,发现病毒在病房的空气中和物体表面广泛存在,重症监护病房的的环境污染比普通病房更严重,而且病毒的传播距离可远至4米。

近日,中国人民解放军军事医学科学院学者发表的一项新研究通过分析火神山医院病房内样本,发现病毒在病房的空气中和物体表面广泛存在,重症监护病房的的环境污染比普通病房更严重,而且病毒的传播距离可远至4米。

研究人员检验了武汉火神山医院1间重症监护病房与1间新冠患者普通病房的物体表面及空气样本,重症监护病房收治了15例重症患者,而普通病房收治了24例病情较轻的患者。

研究发现,几乎所有阳性结果都集中在污染区,重症监护的病毒阳性率(43.5%)远高于普通病房(7.9%)。

研究还发现,空气出口拭子样本检测结果也呈阳性,ICU阳性率为66.7%,普通病房的阳性率为8.3%。

研究者发现,病房地板的病毒阳性率达70%。研究者猜测是重力与气流影响,大多数的病毒飞沫都落到地板。

医护人员经常触碰的物体表面,比如鼠标、垃圾桶、病床护栏、门把手等处的病毒量也较多,病毒阳性率分别是75%、60%、43%、8.3%。医务人员袖口、手套检测到零星阳性。

研究还发现,重症监护病房工作的医护人员中约有一半人的鞋底都携带有新冠病毒。

在医护人员经常出入的配药室、更衣室的地板上的病毒阳性率分别为100%和37.5%。

可见,医护人员的鞋底可能成为病毒传播的载体。

研究者分析了病房内的气溶胶传播。他们发现,含有病毒的气溶胶主要集中在患者附近与下风处,最远可达 4 米,不过,在距离患者 8 米的上风处,也发现有较少量的病毒。

但研究者也提醒,发现的是少量病毒,不一定有传染性。

原始出处:
Guo ZD, et al. Aerosol and Surface Distribution of Severe Acute Respiratory Syndrome Coronavirus 2 in Hospital Wards, Wuhan, China. Emerg Infect Dis. 2020;26(7):10.3201/eid2607.200885.

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    2020-04-27 zhzhxiang
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    2020-04-15 公卫新人

    新冠肺炎,疫情何时才能消失

    0

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    2020-04-15 1489e4e7m33暂无昵称

    消毒很重要!

    0

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