Wearing a face mask does help if you do it properly.— QuickTake by Bloomberg (@QuickTake) January 24, 2020
Seto Wing Hong of Hong Kong University demonstrates the correct way to wear a face mask #coronavirus pic.twitter.com/dDZSBgAr1n
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Wearing a face mask does help if you do it properly.— QuickTake by Bloomberg (@QuickTake) January 24, 2020
Seto Wing Hong of Hong Kong University demonstrates the correct way to wear a face mask #coronavirus pic.twitter.com/dDZSBgAr1n