Modeling aerosol transmission of SARS-CoV-2 from human-exhaled particles in a hospital ward

Saw, Lip Huat and Leo, Bey Fen and Nor, Norefrina Shafinaz Md and Yip, Chee Wai and Ibrahim, Nazlina and Hamid, Haris Hafizal Abd and Latif, Mohd Talib and Lin, Chin Yik and Nadzir, Mohd Shahrul Mohd (2021) Modeling aerosol transmission of SARS-CoV-2 from human-exhaled particles in a hospital ward. Environmental Science and Pollution Research, 28 (38). pp. 53478-53492. ISSN 0944-1344, DOI

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The COVID-19 pandemic has plunged the world into uncharted territory, leaving people feeling helpless in the face of an invisible threat of unknown duration that could adversely impact the national economic growths. According to the World Health Organization (WHO), the SARS-CoV-2 spreads primarily through droplets of saliva or discharge from the mouth or nose when an infected person coughs or sneezes. However, the transmission of the SARS-CoV-2 through aerosols remains unclear. In this study, computational fluid dynamic (CFD) is used to complement the investigation of the SARS-CoV-2 transmission through aerosol. The Lagrangian particle tracking method was used to analyze the dispersion of the exhaled particles from a SARS-CoV-2-positive patient under different exhale activities and different flow rates of chilled (cooling) air supply. Air sampling of the SARS-CoV-2 patient ward was conducted for 48-h measurement intervals to collect the indoor air sample for particulate with diameter less than 2.5 mu m. Then, the reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) was conducted to analyze the collected air sample. The simulation demonstrated that the aerosol transmission of the SARS-CoV-2 virus in an enclosed room (such as a hospital ward) is highly possible.

Item Type: Article
Funders: Universiti Kebangsaan Malaysia[COVID-2020-004], Universiti Malaya COVID-19 Special Research Grant[CSRG009-2020ST]
Uncontrolled Keywords: SARS-CoV-2;Airborne;Virus transmission;PM2;5;Computational fluid dynamic
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QR Microbiology
R Medicine
R Medicine > RA Public aspects of medicine
Divisions: Faculty of Medicine
Depositing User: Ms Zaharah Ramly
Date Deposited: 09 Sep 2022 03:00
Last Modified: 09 Sep 2022 03:01

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