The study provides evidence, under laboratory conditions, of the number of droplets produced by loud speech and their airborne duration suggesting a plausible role of speech droplets in the transmission of SARS-CoV-2 in confined spaces.
Article: Stadnytskyi V, Bax CE, Bax A, Anfinrud P. The airborne lifetime of small speech droplets and their potential importance in SARS-CoV-2 transmission. Proc Natl Acad Sci U S A. 2020;117(22):11875‐11877. doi:10.1073/pnas.2006874117
Epidemiology-How long are small speech droplets airborne