Imperial College London
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ProfessorIanAdcock

Faculty of Medicine, National Heart & Lung Institute

Professor of Respiratory Cell & Molecular Biology
 
 
 
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Contact

 

+44 (0)20 7594 7840ian.adcock Website

 
 
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Location

 

304Guy Scadding BuildingRoyal Brompton Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kumar:2022:10.3390/atmos13122067,
author = {Kumar, P and Kalaiarasan, G and Bhagat, RK and Mumby, S and Adcock, IM and Porter, AE and Ransome, E and Abubakar-Waziri, H and Bhavsar, P and Shishodia, S and Dilliway, C and Fang, F and Pain, CC and Chung, KF},
doi = {10.3390/atmos13122067},
journal = {Atmosphere},
pages = {1--24},
title = {Active air monitoring for understanding the ventilation and infection risks of SARS-CoV-2 transmission in public indoor spaces},
url = {http://dx.doi.org/10.3390/atmos13122067},
volume = {13},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Indoor, airborne, transmission of SARS-CoV-2 is a key infection route. We monitored fourteen different indoor spaces in order to assess the risk of SARS-CoV-2 transmission. PM2.5 and CO2 concentrations were simultaneously monitored in order to understand aerosol exposure and ventilation conditions. Average PM2.5 concentrations were highest in the underground station (261 ± 62.8 μgm−3), followed by outpatient and emergency rooms in hospitals located near major arterial roads (38.6 ± 20.4 μgm−3), the respiratory wards, medical day units and intensive care units recorded concentrations in the range of 5.9 to 1.1 μgm−3. Mean CO2 levels across all sites did not exceed 1000 ppm, the respiratory ward (788 ± 61 ppm) and the pub (bar) (744 ± 136 ppm) due to high occupancy. The estimated air change rates implied that there is sufficient ventilation in these spaces to manage increased levels of occupancy. The infection probability in the medical day unit of hospital 3, was 1.6-times and 2.2-times higher than the emergency and outpatient waiting rooms in hospitals 4 and 5, respectively. The temperature and relative humidity recorded at most sites was below 27 °C, and 40% and, in sites with high footfall and limited air exchange, such as the hospital medical day unit, indicate a high risk of airborne SARS-CoV-2 transmission.
AU  - Kumar,P
AU  - Kalaiarasan,G
AU  - Bhagat,RK
AU  - Mumby,S
AU  - Adcock,IM
AU  - Porter,AE
AU  - Ransome,E
AU  - Abubakar-Waziri,H
AU  - Bhavsar,P
AU  - Shishodia,S
AU  - Dilliway,C
AU  - Fang,F
AU  - Pain,CC
AU  - Chung,KF
DO  - 10.3390/atmos13122067
EP  - 24
PY  - 2022///
SN  - 2073-4433
SP  - 1
TI  - Active air monitoring for understanding the ventilation and infection risks of SARS-CoV-2 transmission in public indoor spaces
T2  - Atmosphere
UR  - http://dx.doi.org/10.3390/atmos13122067
UR  - https://www.mdpi.com/2073-4433/13/12/2067
UR  - http://hdl.handle.net/10044/1/101306
VL  - 13
ER  -
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