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Face mask effectiveness: What we know now

Name: Face mask effectiveness: What we know now
Uploaded: 2023-10-29T19:15:00-0400
Duration: 2 min 59 s
Description: Does wearing a face mask help to prevent COVID? Linsey Marr, a Virginia Tech university professor specializing in aerosol science, explains what scientists have learned since the pandemic began.

Does wearing a face mask help to prevent COVID? Linsey Marr, a Virginia Tech university professor specializing in aerosol science, explains what scientists have learned since the pandemic began.