Health
Coronavirus: Face shields and valved masks fail to stop small droplets – Insider – INSIDER
A visualization published in the Journal of Fluids showed droplets billowing from the edges of face shields and the ports of valved masks.
Not all face coverings are created equal. While face shields and masks with valves might score high on comfort, breathability, and making communication easier, they don’t rank well when it comes to preventing the spread of viral particles.
A visualization study published in Physics of Fluids demonstrated this using a mannequin and an air pump meant to simulate the path of real-life coughs and sneezes.
In a video of the mannequin wearing a plastic face shield, a large cloud of droplets escape…
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