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Face Shields May Cut COVID Spread in Hair Salons

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FRIDAY, Feb. 26, 2021 (HealthDay Information) — Simply having a chat in a hair salon can unfold the coronavirus that causes COVID-19, a brand new research finds.

The identical is probably going true in lots of well being care settings, the identical analysis confirmed.

Most analysis on exhaled air and the unfold of the virus has centered on coughing or sneezing, which might unfold small respiratory droplets throughout lengthy distances.

For this research printed on-line Feb. 23 within the journal Physics of Fluids, Japanese researchers assessed the motion of exhaled air from hair salon staff whereas speaking. They simulated various typical eventualities, resembling staff standing and leaning over prospects, or shampooing a reclining buyer.

“A major quantity of comparable face-to-face contact would happen not solely in cosmetology but in addition in long-term and medical care,” stated research writer Keiko Ishii, from the division of mechanical engineering at Aoyama Gakuin College in Tokyo.

“We analyzed the traits of exhalation diffusion with and with out a masks when an individual was standing, sitting, going through down, or mendacity face up,” Ishii defined in a journal information launch.

The researchers discovered that exhaled air from an unmasked hair salon employee who’s talking tends to maneuver downward resulting from gravity, which signifies that a buyer beneath the speaking employee may very well be susceptible to an infection.

When a speaking employee wears a masks whereas standing or sitting, the aerosol cloud tends to connect to the speaker’s physique, which is hotter than the encompassing air, and flows upward alongside the physique.

But when a employee is leaning over, the aerosol cloud is more likely to detach from that individual’s physique and drift onto the shopper beneath, in accordance with the research.

Experiments with face shields discovered they’ll stop aerosols that leak from across the speaking employee’s masks from floating right down to the shopper.

“The face protect promoted the rise of the exhaled breath,” stated Ishii. “Therefore, it’s simpler to put on each a masks and a face protect when offering providers to prospects.”


Extra info

The U.S. Facilities for Illness Management and Prevention has extra on COVID-19 prevention.


SOURCE: Physics of Fluids, information launch, Feb. 23, 2021





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