#WearAMask - new study shows speaking can spread Covid-19 indoors

[Roland99]

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.

Masks. They’re for YOU and ME

[Igel]

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?

[Roland99]

3. Fixed

[roamer65]

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]

4. Sounds perfect for Trump Klan rallies

[mucifer]

5. who didn't know that?

[Skittles]

6. imagine singing, in churce

yup