Plastic Face Shields Don’t Stop Spread of COVID-19

A new Japanese study has bad news if you’re one of those who have opted to wear plastic face shields as opposed to masks to fight COVID-19: You may think the shields are a great alternative, but they’re basically useless. The study found that “nearly 100% of airborne droplets less than 5 micrometers in size escaped through the shields,” The Guardian reported. “In addition, about half of larger droplets measuring 50 micrometers found their way into the air...

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