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БНХАУ-ын Ухань хотын 2 эмнэлгийн агаарын чанарын үзүүлэлтэд хийсэн судалгаагаар коронавирүс эмнэлгийн дотоод орчны агаарт хадгалагдах эрсдэл өндөр гэдгийг тогтоож, дараах үр дүн гарсан байна:

a. Хамгаалалтын хувцас тайлах өрөө – Маш өндөр

b. Ариун цэврийн өрөө – Өндөр

c. Эмнэлгийн задгай хэсэг – Дунд

d. Өвчтөний өрөөнд – Бага

Судлаачид халдваргүйжүүлэлтийг тухай бүр чанартай хийх, хамгаалалтын хувцас тайлах өрөөнд халдваргүйжүүлэлтийг зохион байгуулах шаардлагатай гэж дүгнэжээ.

Англи хэл дээрх эх материал

Abstract

The ongoing COVID-19 outbreak has spread rapidly on a global scale. While the transmission of SARS-CoV-2 via human respiratory droplets and direct contact is clear, the potential for aerosol transmission is poorly understood1–3. This study investigated the aerodynamic nature of SARS-CoV-2 by measuring viral RNA in aerosols in different areas of two Wuhan hospitals during the COVID-19 outbreak in February and March 2020. The concentration of SARS-CoV-2 RNA in aerosols detected in isolation wards and ventilated patient rooms was very low, but it was elevated in the patients’ toilet areas. Levels of airborne SARS-CoV-2 RNA in the majority of public areas was undetectable except in two areas prone to crowding, possibly due to infected carriers in the crowd. We found that some medical staff areas initially had high concentrations of viral RNA with aerosol size distributions showing peaks in submicrometre and/or supermicrometre regions, but these levels were reduced to undetectable levels after implementation of rigorous sanitization procedures. Although we have not established the infectivity of the virus detected in these hospital areas, we propose that SARS-CoV-2 may have the potential to be transmitted via aerosols. Our results indicate that room ventilation, open space, sanitization of protective apparel, and proper use and disinfection of toilet areas can effectively limit the concentration of SARS-CoV-2 RNA in aerosols. Future work should explore the infectivity of aerosolized virus.

Author information

Author notes

  1. These authors contributed equally: Yuan Liu, Zhi Ning, Yu Chen, Ming Guo

Affiliations

  1. State Key Laboratory of Virology, Modern Virology Research Center, College of Life Sciences, Wuhan University, Wuhan, P. R. China
    • Yuan Liu
    • , Yu Chen
    • , Ming Guo
    • , Yingle Liu
    • , Xinjin Liu
    • , Ke Xu
    •  & Ke Lan
  2. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong SAR, P. R. China
    • Zhi Ning
    • , Nirmal Kumar Gali
    • , Li Sun
    •  & Dane Westerdahl
  3. Shanghai Environmental Monitoring Center, Shanghai, P. R. China
    • Yusen Duan
    •  & Qingyan Fu
  4. School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and Key Lab of Health Technology Assessment of the Ministry of Health, Fudan University, Shanghai, P. R. China
    • Jing Cai
    •  & Haidong Kan
  5. JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, P. R. China
    • Kin-fai Ho

Corresponding authors

Correspondence to Zhi Ning or Yu Chen or Kin-fai Ho or Haidong Kan or Qingyan Fu or Ke Lan.

Эх сурвалж: Nature.com, Эрүүл мэндийн яам