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Presence of Sars-Cov-2 in the Air of Public Places and Transportation Publisher



Hadei M1 ; Mohebbi SR2 ; Hopke PK3, 4 ; Shahsavani A5, 6 ; Bazzazpour S6 ; Alipour M6 ; Jafari AJ7 ; Bandpey AM6 ; Zali A8 ; Yarahmadi M9 ; Farhadi M9 ; Rahmatinia M6 ; Hasanzadeh V6 ; Nazari SSH10 Show All Authors
Authors
  1. Hadei M1
  2. Mohebbi SR2
  3. Hopke PK3, 4
  4. Shahsavani A5, 6
  5. Bazzazpour S6
  6. Alipour M6
  7. Jafari AJ7
  8. Bandpey AM6
  9. Zali A8
  10. Yarahmadi M9
  11. Farhadi M9
  12. Rahmatinia M6
  13. Hasanzadeh V6
  14. Nazari SSH10
  15. Asadzadehaghdaei H11
  16. Tanhaei M12
  17. Zali MR2
  18. Kermani M7
  19. Vaziri MH13
  20. Chobineh H14
Show Affiliations
Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  3. 3. Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, 14642, NY, United States
  4. 4. Center for Air Resources Engineering and Science, Clarkson University, Potsdam, 13699, NY, United States
  5. 5. Environmental and Occupational Hazards Control Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  6. 6. Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  7. 7. Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
  8. 8. Department of Neurosurgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  9. 9. Environmental and Occupational Health Center, Ministry of Health and Medical Education, Tehran, Iran
  10. 10. Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  11. 11. Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases Shahid Beheshti University of Medical Sciences, Tehran, Iran
  12. 12. Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  13. 13. Workplace Health Promotion Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  14. 14. Department of Laboratory Sciences, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran

Source: Atmospheric Pollution Research Published:2021


Abstract

This study investigated the presence of SARS-CoV-2 in air of public places such as shopping centers, a post office, banks, governmental offices, and public transportation facilities including an airport, subways, and buses in Tehran, Iran. A total of 28 air samples were collected from the eight groups of public and transportation locations. The airborne particle samples were collected on PTFE or glass fiber filters using two types of samplers with flow rates of 40 and 3.5 L/min, respectively. The viral samples were leached and concentrated, and RNA was extracted from each. The presence of viral RNA was evaluated using novel coronavirus nucleic acid diagnostic real time PCR kits. In 64% of the samples, SARS-CoV-2 RNA (62% and 67% from the public places and transportation, respectively) was detected. Positive samples were detected in banks (33%), shopping centers (100%), governmental offices (50%), the airport (80%), subway stations (50%), subway trains (100%), and buses (50%). Logistic regression showed that number of people present during the sampling and the sampled air volume were positively associated with presence of SARS-CoV-2; while the percentage of people with masks, air temperature, and sampling site's volume were negatively related to SARS-CoV-2's presence. However, none of these associations were statistically significant. This study showed that most public places and transportation vehicles were contaminated with SARS-CoV-2. Thus, strategies to control the spread of COVID-19 should include reducing the number of people in indoor spaces, more intense disinfection of transport vehicles, and requiring people to wear masks. © 2021 Turkish National Committee for Air Pollution Research and Control
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