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Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19

During the COVID-19 pandemic, many buildings in northeast China have had clusters of infected cases in the vertical layout. There is speculation that vertical aerosol transmission occurs. The houses in northeast China are airtight, and range hoods may be used for a long period of time when cooking....

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Autores principales: Li, Xia, Sun, Bingxin, Lyu, Keyang, Chen, Jiayu, Zhang, Yunjian, Sun, Yu, Li, Chenguang, Sui, Tianzhuo, Wang, Xinxin, Hu, Yu, Wang, Qin, Xu, Dongqun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9881651/
https://www.ncbi.nlm.nih.gov/pubmed/36711357
http://dx.doi.org/10.3389/fpubh.2022.1052610
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author Li, Xia
Sun, Bingxin
Lyu, Keyang
Chen, Jiayu
Zhang, Yunjian
Sun, Yu
Li, Chenguang
Sui, Tianzhuo
Wang, Xinxin
Hu, Yu
Wang, Qin
Xu, Dongqun
author_facet Li, Xia
Sun, Bingxin
Lyu, Keyang
Chen, Jiayu
Zhang, Yunjian
Sun, Yu
Li, Chenguang
Sui, Tianzhuo
Wang, Xinxin
Hu, Yu
Wang, Qin
Xu, Dongqun
author_sort Li, Xia
collection PubMed
description During the COVID-19 pandemic, many buildings in northeast China have had clusters of infected cases in the vertical layout. There is speculation that vertical aerosol transmission occurs. The houses in northeast China are airtight, and range hoods may be used for a long period of time when cooking. The pathway and factors influencing vertical aerosol transmission are worth studying. To elucidate a viral aerosol transmission pathway, we selected a multistory apartment and a high-rise building in Changchun city, Jilin province, China, to conduct an in-depth investigation and on-site simulation experiments. According to epidemiological investigation information on infected cases, building structures, drainage, ventilation, etc., we used fluorescent microspheres to simulate the behaviors of infected people, such as breathing and flushing the toilet after defecation, to discharge simulated viruses and track and monitor them. The field simulation experiment confirmed the transmission of fluorescent microsphere aerosols to other rooms in two types of buildings using a vertical aerosol transmission pathway of toilet flush-sewage pipe-floor drain without a water seal. Our study showed that, in the absence of a U-shaped trap or floor drain water seal whether in a multistory apartment or high-rise residential building, there is a transmission pathway of “excretion of virus through feces-toilet flushing-sewage pipe-floor drain without water seal,” which will cause the vertical transmission of viral aerosol across floors during the COVID-19 pandemic. Moreover, the negative pressure generated by turning on the range hood when closing doors and windows increase aerosol transmission. Based on this negative pressure, prevention and control measures for residential buildings in northeast China during the COVID-19 pandemic were proposed.
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spelling pubmed-98816512023-01-28 Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19 Li, Xia Sun, Bingxin Lyu, Keyang Chen, Jiayu Zhang, Yunjian Sun, Yu Li, Chenguang Sui, Tianzhuo Wang, Xinxin Hu, Yu Wang, Qin Xu, Dongqun Front Public Health Public Health During the COVID-19 pandemic, many buildings in northeast China have had clusters of infected cases in the vertical layout. There is speculation that vertical aerosol transmission occurs. The houses in northeast China are airtight, and range hoods may be used for a long period of time when cooking. The pathway and factors influencing vertical aerosol transmission are worth studying. To elucidate a viral aerosol transmission pathway, we selected a multistory apartment and a high-rise building in Changchun city, Jilin province, China, to conduct an in-depth investigation and on-site simulation experiments. According to epidemiological investigation information on infected cases, building structures, drainage, ventilation, etc., we used fluorescent microspheres to simulate the behaviors of infected people, such as breathing and flushing the toilet after defecation, to discharge simulated viruses and track and monitor them. The field simulation experiment confirmed the transmission of fluorescent microsphere aerosols to other rooms in two types of buildings using a vertical aerosol transmission pathway of toilet flush-sewage pipe-floor drain without a water seal. Our study showed that, in the absence of a U-shaped trap or floor drain water seal whether in a multistory apartment or high-rise residential building, there is a transmission pathway of “excretion of virus through feces-toilet flushing-sewage pipe-floor drain without water seal,” which will cause the vertical transmission of viral aerosol across floors during the COVID-19 pandemic. Moreover, the negative pressure generated by turning on the range hood when closing doors and windows increase aerosol transmission. Based on this negative pressure, prevention and control measures for residential buildings in northeast China during the COVID-19 pandemic were proposed. Frontiers Media S.A. 2023-01-12 /pmc/articles/PMC9881651/ /pubmed/36711357 http://dx.doi.org/10.3389/fpubh.2022.1052610 Text en Copyright © 2023 Li, Sun, Lyu, Chen, Zhang, Sun, Li, Sui, Wang, Hu, Wang and Xu. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Public Health
Li, Xia
Sun, Bingxin
Lyu, Keyang
Chen, Jiayu
Zhang, Yunjian
Sun, Yu
Li, Chenguang
Sui, Tianzhuo
Wang, Xinxin
Hu, Yu
Wang, Qin
Xu, Dongqun
Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19
title Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19
title_full Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19
title_fullStr Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19
title_full_unstemmed Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19
title_short Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19
title_sort research on the relationship between architectural features in northeast china and vertical aerosol transmission of covid-19
topic Public Health
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9881651/
https://www.ncbi.nlm.nih.gov/pubmed/36711357
http://dx.doi.org/10.3389/fpubh.2022.1052610
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