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Masks, face shields on their own can't prevent SARS-CoV2 transmission, says WHO

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Also Read: Inside India’s Quest to Fix Its Payments PuzzleCurrent laboratory testing standards only assess face shields for their ability to provide eye protection from chemical splashes. “In the context of non-availability or difficulties wearing a non-medical mask (in persons with cognitive, respiratory or hearing impairments, for example), face shields may be considered as an alternative, noting that they are inferior to masks with respect to droplet transmission and prevention.

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