Choir practice turns fatal. Airborne coronavirus strongly suspected
https://www.yahoo.com/news/choir-decided-ahead-rehearsal-now-023414705.html
That japanese video of how easily it spreads was illuminating. I can just imagine what it would look like with people singing.
People do not realize how far singing distributes aerosols.
Here’s an interesting study on this:
Aerosol emission and superemission during human speech increase with voice loudness
“Early work by Papineni and Rosenthal16 and Loudon and Roberts19 reported that speaking (as exemplified by counting aloud) releases about 2–10 times as many total particles as a single cough. Similarly, Loudon and Roberts investigated the role of singing in the spread of tuberculosis and showed that the percentage of airborne droplet nuclei generated by singing is 6 times more than that emitted during normal talking and approximately equivalent to that released by coughing27. More recent work using advanced particle characterization techniques have yielded similar results21,28,29,30.”
https://www.nature.com/articles/s41598-019-38808-z