Loud singing increases risk of COVID-19 transmission: Study
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Singing doesn't need to be silenced, however, but at the moment the wisest thing is to sing with social distancing in place - Advice comes from aerosol researchers at Lund University in Sweden.

Key Insights:

• 12 healthy singers and two people with confirmed Covid-19 took part in a research project. 7 of the participants were professional opera singers.

• The study shows that singing - particularly loud and consonant-rich singing - spreads a lot of aerosol particles and droplets into the surrounding air.

• Some droplets are so large that they only move a few decimetres from the mouth before they fall, whereas others are smaller and may continue to hover for minutes.

• In particular, the enunciation of consonants releases very large droplets and the letters B and P stand out as the biggest aerosol spreaders.

• The analysis was conducted of the number and mass of particles emitted by singers during breathing, talking, different types of singing and singing with a face mask.

• What they sang was a short and plosive-rich Swedish song, "Bibbis pippi Petter", which was repeated 12 times in two minutes at a constant pitch.

• The same song was also repeated with the consonants removed, leaving only the vowels.

• Researchers found, louder and more powerful the song, the greater the concentration of aerosols and droplets.

The song can be sung with social distancing, good hygiene and good ventilation, which reduces the concentration of aerosol particles in the air. Face masks can also make a difference.

Source: https://www.eurekalert.org/pub_releases/2020-09/lu-css090720.php
Original article: https://www.tandfonline.com/doi/full/10.1080/02786826.2020.1812502
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