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The visualization shows that face protection may not protect against the spread of COVID-19



A new visualization shows why face protection and Masks with exhalation valves may not be the best barriers to preventing the spread of COVID-19.

Although face shields initially protect droplets from a simulated cough, small droplets can easily move around the sides of the visor and eventually spread over a large area, as can be seen from the visualization posted in a diary posted on Tuesday (September 1) Physics of liquids.


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