Title Transmission of airborne infection by bioaerosols expelled from passenger’s activity during the journey
Subtitle Meeting the challenges for future mobility: proceedings
Author Kwon, S-B
Cho, Y
Park, D-S
Park, J-H
Jeong, W
Kim, C
Bae, G-N
Affiliation Railroad Environment Research Department, Korea Railroad Research Institute, Uiwang, Korea
Department of Preventive Medicine, Yonsei University, Seoul, Korea
Global Environment Center, Korea Institute of Science and Technology, Seoul, Korea
Publication Date 2011
Conference 9th World Congress on Railway Research (WCRR) May 22-26 2011, Lille, France
Abstract More than 7 million people use city-trains in the Seoul metropolitan area per day and this is expected to increase by the construction or upgrading of railway lines. Indoor air quality (IAQ) of subways becomes a key issue since the IAQ guidelines for public transportation were published in Korea. In the guidelines, the minimum concentration level of two major pollutants, particulate matters (PM10) and carbon dioxide (CO2), were suggested for proper management of cabin IAQ. However, bioaerosols, mostly come from passengers’ respiratory activity, and has not been treated importantly until the worldwide outbreak of influenza virus, H1N1 or severe acute respiratory syndrome (SARS). It is believed that one of the main transmission mechanisms is airborne transmission and train journeys have a key role in disease transmission from city to city. Expiratory aerosol droplets produced by speech or coughing are potential carriers of pathogens that cause airborne diseases during the journey because the cabin indoors has a confined volume with limited ventilation. There are few studies on the transmission of airborne disease especially during the train journey. In this study, the authors simulated the behavior of bioaerosols through the passenger’s cough and speech, and demonstrated the possible route of transmission in the train cabin. The initial velocity and concentration of saliva droplets were experimentally measured and the indoor airflow pattern was analyzed with numerical method. The case of one passenger’s cough was simulated to reveal the possibility of airborne transmission to other passengers in the cabin.
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Transmission of airborne infection by bioaerosols
Physical Description 7p. ; PDF
Subjects Environment
Rail transport
Passenger
Transport performance
Location Server
ARRB library
Category Rail Knowledge Bank Index Passenger services
Rail Knowledge Bank Index Environment