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Author(s): da Silva, PG
Gonçalves, J
Nascimento, MSJ
Sousa, SIV
Mesquita, JR
Title: Detection of SARS-CoV-2 in the Indoor and Outdoor Areas of Urban Public Transport Systems of Three Major Cities of Portugal in 2021
Publisher: MDPI
Issue Date: 2022
Abstract: Airborne transmission is mainly associated with poorly ventilated and crowded indoor environments where people stay for long periods of time. As such, public transport is often perceived as having a high risk for the transmission of SARS-CoV-2. Considering that data on the detection of SARS-CoV-2 in public transport systems are scarce, we performed air sampling for SARS-CoV-2 in indoor and outdoor spaces of public transport systems in Portugal. Air (n = 31) and surface (n = 70) samples were collected using a Coriolis® Compact microbial air sampler and sterile flocked plastic swabs, respectively. Samples were extracted and analyzed through RT-qPCR. Only two air samples from an outdoor and a partially open space were found to be positive for SARS-CoV-2 RNA. No positive surface samples were detected. These results indicate that the viral concentration in ambient air in public transport systems is linked to the number of people present in that environment and whether they are wearing properly fitting masks. Considering the current lifting of COVID-19 restrictions around the world, it is essential that people continue to wear masks in both indoor and outdoor environments, especially in crowded spaces. More studies on this topic are needed to fully elucidate the real risk of infection in outdoor spaces. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Subject: air sampling; airborne transmission; environmental contamination; indoor air; outdoor air; SARS-CoV-2
Source: Int J Environ Res Public Health. 2022 May 13;19(10):5955. doi: 10.3390/ijerph19105955.
Related Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP/00511/2020/PT
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB/00511/2020/PT
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:ISPUP - Artigo em Revista Científica Internacional

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