Frequency, kinetics and determinants of viable SARS-CoV-2 in bioaerosols from ambulatory COVID-19 patients infected with the Beta, Delta or Omicron variants

Autor: S. Jaumdally, M. Tomasicchio, A. Pooran, A. Esmail, A. Kotze, S. Meier, L. Wilson, S. Oelofse, C. van der Merwe, A. Roomaney, M. Davids, T. Suliman, R. Joseph, T. Perumal, A. Scott, M. Shaw, W. Preiser, C. Williamson, A. Goga, E. Mayne, G. Gray, P. Moore, A. Sigal, J. Limberis, J. Metcalfe, K. Dheda
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Druh dokumentu: article
ISSN: 2041-1723
DOI: 10.1038/s41467-024-45400-1
Popis: Abstract Airborne transmission of SARS-CoV-2 aerosol remains contentious. Importantly, whether cough or breath-generated bioaerosols can harbor viable and replicating virus remains largely unclarified. We performed size-fractionated aerosol sampling (Andersen cascade impactor) and evaluated viral culturability in human cell lines (infectiousness), viral genetics, and host immunity in ambulatory participants with COVID-19. Sixty-one percent (27/44) and 50% (22/44) of participants emitted variant-specific culture-positive aerosols 95%). There is considerable heterogeneity in potential infectiousness i.e., only 29% of participants were probably highly infectious (produced culture-positive aerosols
Databáze: Directory of Open Access Journals
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