Abstract
This study investigated the potential of using SARS-CoV-2 viral concentrations in dust as an additional surveillance tool for early detection and monitoring of COVID-19 transmission. Dust samples were collected from 8 public locations in 16 districts of Bangkok, Thailand, from June to August 2021. SARS-CoV-2 RNA concentrations in dust were quantified, and their correlation with community case incidence was assessed. Our findings revealed a positive correlation between viral concentrations detected in dust and the relative risk of COVID-19. The highest risk was observed with no delay (0-day lag), and this risk gradually decreased as the lag time increased. We observed an overall decline in viral concentrations in public places during lockdown, closely associated with reduced human mobility. The effective reproduction number for COVID-19 transmission remained above one throughout the study period, suggesting that transmission may persist in locations beyond public areas even after the lockdown measures were in place.
Original language | English |
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Article number | 109043 |
Pages (from-to) | 1-16 |
Number of pages | 16 |
Journal | iScience |
Volume | 27 |
Issue number | 3 |
DOIs | |
Publication status | Published - 15 Mar 2024 |
Bibliographical note
Funding Information:Dhammika Leshan Wannigama was supported by Balvi Filantropic Fund and Chulalongkorn University ( Second Century Fund-C2F Postdoctoral Fellowship ), University of Western Australia ( Overseas Research Experience Fellowship ) and Yamagata Prefectural Central Hospital , Yamagata, Japan ( Clinical Residency Fellowship ). Charin Modchang was supported by the Centre of Excellence in Mathematics , Ministry of Higher Education , Science, Research and Innovation , Thailand, Center of Excellence on Medical Biotechnology ( CEMB ), and Thailand Center of Excellence in Physics (ThEP). Sudarat Chadsuthi was supported by Naresuan University and National Science, Research and Innovation Fund (NSRF) . Anthony Kicic is a Rothwell Family Fellow . The sponsor(s) had no role in study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the article for publication.
Funding Information:
We thank all the volunteers who kindly supported with sample collection. Also, thanks to Dr. Ong-orn Prasarnphanich at the United States Centers for Disease Control and Prevention (CDC) Thailand for technical support and the previous Chargé d'Affaires of the United States of America to Thailand (U.S. Embassy and Consulate in Thailand), Mr. Michael Heath, for facilitating collaboration with the CDC and Armed Forces Research Institute of Medical Sciences (AFRIMS). We also thank the LGBTQIA+ community in Thailand for generous support with sample collection, TEDxChiangMai team and Martin Venzky-Stalling for facilitating platform for collaboration, and marginalized, vulnerable indigenous communities in Thailand for support with sample collection. Special thanks to Nuttawut Kietchaiyakorn for helping with the illustrations. We, the authors of this paper, embrace inclusive, diverse, and equitable conduct of research. Our team comprises individuals who self-identify as underrepresented ethnic minorities, gender minorities, members of the LGBTQIA+ community, and individuals living with disabilities. We actively promote gender balance in our reference list while maintaining scientific relevance. Dhammika Leshan Wannigama was supported by Balvi Filantropic Fund and Chulalongkorn University (Second Century Fund-C2F Postdoctoral Fellowship), University of Western Australia (Overseas Research Experience Fellowship) and Yamagata Prefectural Central Hospital, Yamagata, Japan (Clinical Residency Fellowship). Charin Modchang was supported by the Centre of Excellence in Mathematics, Ministry of Higher Education, Science, Research and Innovation, Thailand, Center of Excellence on Medical Biotechnology (CEMB), and Thailand Center of Excellence in Physics (ThEP). Sudarat Chadsuthi was supported by Naresuan University and National Science, Research and Innovation Fund (NSRF). Anthony Kicic is a Rothwell Family Fellow. The sponsor(s) had no role in study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the article for publication. Conception, S.C. P.H. C.H. M.A. C.M. and D.L.W.; Data collection, R.K.; Data curation, S. Anupong. P.H. C.H. P.V. T.S. M.A. and D.L.W.; Formal analysis, S. Anupong. S.C. P.H. C.H. P.V. T.S. M.A. C.M. and D.L.W.; Statistical analysis, S. Anupong and S.C.; Supervision, S. Anupong, S.C. P.H. C.H. P.P. A.H.R.S.M. S.F. A.T.H. S.L. R.J.S. P.O. N.K.D.R. K.M. L.C. A.N. K. Sei, D.S. T.F. K. Shibuya, P.G.H. A.K. A.C.S. T.C. S.T. S. Abe, H.I. M.A. C.M. and D.L.W.; Writing- original draft, S. Anupong, S.C. P.H. C.H. M.A, C.M. and D.L.W.; Critical review and editing, S. Anupong, S.C. P.P. A.H.R.S.M. S.F. A.T.H. S.L. R.J.S. P.O. N.K.D.R. P.K. N.N. V.N.B. W.T. A.L. T.K. K.M. L.C. A.N. K. Shibuya, R.K. D.S. T.F. K. Sei, P.G.H. A.K. A.C.S. T.C. S.T. S. Abe, H.I. and C.M.; Investigation, P.H. C.H.M.A.C.M. and D.L.W.; Funding acquisition, P.H. C.H. C.M. and D.L.W. The authors declare no competing interests.
Publisher Copyright:
© 2024 The Author(s)