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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region Forums#WearAMask - new study shows speaking can spread Covid-19 indoors
Last edited Fri May 22, 2020, 06:11 PM - Edit history (1)
The airborne lifetime of small speech droplets and their potential importance in SARS-CoV-2 transmission
https://www.pnas.org/content/early/2020/05/12/2006874117
Abstract
Speech droplets generated by asymptomatic carriers of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are increasingly considered to be a likely mode of disease transmission. Highly sensitive laser light scattering observations have revealed that loud speech can emit thousands of oral fluid droplets per second. In a closed, stagnant air environment, they disappear from the window of view with time constants in the range of 8 to 14 min, which corresponds to droplet nuclei of ca. 4 μm diameter, or 12- to 21-μm droplets prior to dehydration. These observations confirm that there is a substantial probability that normal speaking causes airborne virus transmission in confined environments.
Speech droplets generated by asymptomatic carriers of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are increasingly considered to be a likely mode of disease transmission. Highly sensitive laser light scattering observations have revealed that loud speech can emit thousands of oral fluid droplets per second. In a closed, stagnant air environment, they disappear from the window of view with time constants in the range of 8 to 14 min, which corresponds to droplet nuclei of ca. 4 μm diameter, or 12- to 21-μm droplets prior to dehydration. These observations confirm that there is a substantial probability that normal speaking causes airborne virus transmission in confined environments.
Masks. Theyre for YOU and ME
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#WearAMask - new study shows speaking can spread Covid-19 indoors (Original Post)
Roland99
May 2020
OP
Igel
(35,374 posts)1. And yet, the title is hysterical.
Speaking =/= breathing.
Maybe the editor that gave the article its title is confused between the two. The only way to exhale is through modal phonation?
roamer65
(36,747 posts)2. Masks for everyone indoors.
The masks greatly reduce the droplets.
Wearing a mask is the most selfless thing one can do right now.
world wide wally
(21,757 posts)4. Sounds perfect for Trump Klan rallies
mucifer
(23,576 posts)5. who didn't know that?
Skittles
(153,220 posts)6. imagine singing, in churce
yup