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Article: Close contact behaviors of university and school students in 10 indoor environments

TitleClose contact behaviors of university and school students in 10 indoor environments
Authors
KeywordsAerosol exposure
Close contact
Coronavirus disease 2019
Deposition
Inhalation
Issue Date15-Sep-2023
PublisherElsevier
Citation
Journal of Hazardous Materials, 2023, v. 458 How to Cite?
AbstractClose contact routes, including short-range airborne and large-droplet routes, play an important role in the transmission of SARS-CoV-2 in indoor environments. However, the exposure risk of such routes is difficult to quantify due to the lack of data on the close contact behavior of individuals. In this study, a digital wearable device, based on semi-supervised learning, was developed to automatically record human close contact behavior. We collected 337,056 s of indoor close contact of school and university students from 194.5 h of depth video recordings in 10 types of indoor environments. The correlation between aerosol exposure and close contact behaviors was then evaluated. Individuals in restaurants had the highest close contact ratio (64%), as well as the highest probability of face-to-face pattern (78%) during close contact. Accordingly, university students showed greater exposure potential in dormitories than school students in homes, however, a lower exposure was observed in classrooms and postgraduate student offices in comparison with school students in classrooms. In addition, restaurants had the highest aerosol exposure volume for both short-range inhalation and direct deposition on the facial mucosa. Thus, the classroom was established as the primary indoor environment where school students are exposed to aerosols.
Persistent Identifierhttp://hdl.handle.net/10722/332027
ISSN
2023 Impact Factor: 12.2
2023 SCImago Journal Rankings: 2.950
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, N-
dc.contributor.authorLiu, L-
dc.contributor.authorDou, ZY-
dc.contributor.authorLiu, XY-
dc.contributor.authorYang, XZ-
dc.contributor.authorMiao, DD-
dc.contributor.authorGuo, Y-
dc.contributor.authorGu, SL-
dc.contributor.authorLi, YG-
dc.contributor.authorQian, H-
dc.contributor.authorWei, JJ-
dc.date.accessioned2023-09-28T05:00:22Z-
dc.date.available2023-09-28T05:00:22Z-
dc.date.issued2023-09-15-
dc.identifier.citationJournal of Hazardous Materials, 2023, v. 458-
dc.identifier.issn0304-3894-
dc.identifier.urihttp://hdl.handle.net/10722/332027-
dc.description.abstractClose contact routes, including short-range airborne and large-droplet routes, play an important role in the transmission of SARS-CoV-2 in indoor environments. However, the exposure risk of such routes is difficult to quantify due to the lack of data on the close contact behavior of individuals. In this study, a digital wearable device, based on semi-supervised learning, was developed to automatically record human close contact behavior. We collected 337,056 s of indoor close contact of school and university students from 194.5 h of depth video recordings in 10 types of indoor environments. The correlation between aerosol exposure and close contact behaviors was then evaluated. Individuals in restaurants had the highest close contact ratio (64%), as well as the highest probability of face-to-face pattern (78%) during close contact. Accordingly, university students showed greater exposure potential in dormitories than school students in homes, however, a lower exposure was observed in classrooms and postgraduate student offices in comparison with school students in classrooms. In addition, restaurants had the highest aerosol exposure volume for both short-range inhalation and direct deposition on the facial mucosa. Thus, the classroom was established as the primary indoor environment where school students are exposed to aerosols.-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofJournal of Hazardous Materials-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectAerosol exposure-
dc.subjectClose contact-
dc.subjectCoronavirus disease 2019-
dc.subjectDeposition-
dc.subjectInhalation-
dc.titleClose contact behaviors of university and school students in 10 indoor environments-
dc.typeArticle-
dc.identifier.doi10.1016/j.jhazmat.2023.132069-
dc.identifier.pmid37463561-
dc.identifier.scopuseid_2-s2.0-85165143914-
dc.identifier.volume458-
dc.identifier.eissn1873-3336-
dc.identifier.isiWOS:001043777700001-
dc.publisher.placeAMSTERDAM-
dc.identifier.issnl0304-3894-

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