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A new study revealed that a face shield does not protect against corona infection if the infected person sneezes at a short distance without wearing a muzzle.
The British newspaper “Daily Mail” said that the study by researchers at Fukuoka University in Japan, which was published in the journal “Fluid Physics”, is a new addition to the body of evidence on the futility of wearing face shields.
Researchers involved in the study used computer models to visualize the spread of droplets released by the sneezer around the shield from a distance of about one meter.
Models reveal “vortex rings” produced by sneezes that carry infectious particles to the face shield in less than a second and adhere to its plastic edges.
The researchers say: “If the timing of this wave of Corona virus particles coincides with the respiration of the face shield wearer, you can become infected.
Previous research found that shields are useless at catching droplets, indicating that a person using an invite while infected can become a spreader of the virus.
Many choose to wear face shields as an alternative to masks, because it is less restrictive within confined spaces and because it allows the owner to see their mouth and facial expressions while communicating with others.
Source: Sputnik
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