Will the coronavirus spread when I sing “Happy Birthday”?

See someone blow up birthday Candle in Coronavirus pandemic Could lead to concerns aerosol Ejecting into the air. But when you sing “Happy Birthday,” you may be concerned about the potential of the infection, so you may be concerned about the tradition that comes just before the candle disappears. COVID-19 (New Coronavirus Infection) (# If there is no character limit, add parentheses when first appearingThanks to Swedish studies.

“Singing produced more aerosol particles and droplets than speaking,” a researcher in the Aerosol Institute at Lund University said in a study published in Aerosol Science and Technology.

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Researchers also found that consonants were the culprit when carrying aerosols while carrying a tone, and many of the consonant characters they identified were in the song “Happy Birthday.” Was found.

“From high speed camera drop analysis, we found that some of the consonants such as “P”, “B”, “R”, and “T” produced large drops from a large number of small drops .. In published research.

Researchers also found that consonants were the culprit when carrying aerosols while carrying a tone, and many of the consonant characters they identified were in the song “Happy Birthday.” Was found. (IStock)

“In particular, the consonant pronunciation emits very large droplets, and the letters B and P stand out as the largest aerosol spreader.” Press release..

In the study, participants entered a chamber filled with filtered air, free of particles. According to the press release, researchers use high-speed cameras, powerful lamps, and equipment to measure small particles produced by performers as they perform, sing, breathe, talk, and sing. I did an analysis.

In the release, participants explained that they sang the Swedish song “Bibbis Pippi Petter” repeatedly for 2 minutes, then sung again without consonants, leaving only the vowels. The team then measured the presence of aerosols, the mass of the droplets, and the distance air particles traveled.

“The vowel singing doesn’t provide a high airflow for the dispersion of particles, but as shown in the video file, the consonant joints eject droplets at a fairly forward velocity. Most of the droplets travel a limited distance (<0.5 m) before settling causes vertical migration,” said the published study.

“Some droplets are only a few decimeters out of the mouth before they fall, while other droplets are small and may continue hovering for a few minutes,” said the publication.

Researchers also investigated the singing voices of patients infected with the new coronavirus.

“We also made a measurement of the virus in the air near two people who sang when they had COVID-19. Their air sample did not contain detectable amounts of virus. However, the viral load varies in different parts of the respiratory tract and in people, so aerosols from people with Covid-19 can still carry the risk of infection when singing,” Alsved said in a press release. I am.

According to the researchers, when singing “Happy Birthday”, be careful singing loudly and pitching the song to avoid communication.

“Aerosol particles and droplets in the breath increased with the volume of the singing voice,” the researchers said in a published article. The report also noted that higher pitch releases more particles.

The study also pointed out that wearing a face cover can reduce the spread of aerosols.

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The study also touches on the importance of face masks to prevent splashes and viral infections.

In a release, research author Jakob Löndahl, an associate professor of aerosol technology at Lund University, said in a release, “When the singer wears a simple face mask, this catches most aerosols and droplets, and the level turns into normal speech. It was comparable.”

Whether singing “Happy Birthday” at home or in a group activity, the authors concluded that singing in a group increased the risk of viral infection, but that face mask wear, social distance, and proper ventilation Hand hygiene.