Hair Salon Talk Can Spread COVID, But Face Shields Cut the Danger
FRIDAY, Feb. 26, 2021 -- Just having a chat in a hair salon can spread the coronavirus that causes COVID-19, a new study finds.
The same is likely true in many health care settings, the same research showed.
Most research on exhaled air and the spread of the virus has focused on coughing or sneezing, which can spread small respiratory droplets across long distances.
For this study published online Feb. 23 in the journal Physics of Fluids, Japanese researchers assessed the movement of exhaled air from hair salon workers while talking. They simulated a number of typical scenarios, such as workers standing and leaning over customers, or shampooing a reclining customer.
"A significant amount of similar face-to-face contact would occur not only in cosmetology but also in long-term and medical care," said study author Keiko Ishii, from the department of mechanical engineering at Aoyama Gakuin University in Tokyo.
"We analyzed the characteristics of exhalation diffusion with and without a mask when a person was standing, sitting, facing down, or lying face up," Ishii explained in a journal news release.
The researchers found that exhaled air from an unmasked hair salon worker who is speaking tends to move downward due to gravity, which means that a customer below the talking worker could be at risk of infection.
When a talking worker wears a mask while standing or sitting, the aerosol cloud tends to attach to the speaker's body, which is warmer than the surrounding air, and flows upward along the body.
But if a worker is leaning over, the aerosol cloud is likely to detach from that person's body and drift onto the customer below, according to the study.
Experiments with face shields found they can prevent aerosols that leak from around the talking worker's mask from floating down to the customer.
"The face shield promoted the rise of the exhaled breath," said Ishii. "Hence, it is more effective to wear both a mask and a face shield when providing services to customers."
© 2021 HealthDay. All rights reserved.
Posted: February 2021
Further Support and Information on COVID-19
Read this next
WEDNESDAY, April 21, 2021 -- Since the first COVID-19 vaccine was approved in December, millions of Americans have eagerly sought to find and receive one. But a new report finds...
WEDNESDAY, April 21, 2021 -- Outspoken pandemic denier Ted Nugent announced this week that he's tested positive for COVID-19, after 10 days of symptoms so severe that at times he...
WEDNESDAY, April 21, 2021 -- As if the headaches and stuffy nose aren't bad enough, chronic sinus trouble often leaves patients foggy-headed and depressed. Now, new research...
More News Resources
- FDA Medwatch Drug Alerts
- Daily MedNews
- News for Health Professionals
- New Drug Approvals
- New Drug Applications
- Drug Shortages
- Clinical Trial Results
- Generic Drug Approvals
Subscribe to our Newsletter
Whatever your topic of interest, subscribe to our newsletters to get the best of Drugs.com in your inbox.