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Graphic detail | Daily chart REAL-WORLD EVIDENCE SHOWS FACE MASKS REDUCE COVID-19’S SPREAD A STUDY FROM BANGLADESH FOUND THEY HELP EVEN IF MANY DON'T WEAR THEM IN THE ARSENAL of
measures to prevent covid-19, face masks hold a special place. They are cheap, easy to use and can be deployed almost immediately. Laboratory studies have shown that face coverings made of
various materials block large amounts of the SARS-CoV-2 virus. But there is a dearth of data on how effective masks are in preventing actual covid-19 cases in real-life conditions, where
masks are worn sporadically and, all too often, incorrectly.
