I think the relevant passage. Basically, it's an effective protection against short range coughs, but it's not enough for the small particular which this study is suggesting a good model.pic.twitter.com/qJ41ZgNhr6
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"Thus, face shields provide a useful adjunct to respiratory protection for workers caring for patients with respiratory infections. However, they cannot be used as a substitute for respiratory protection when it is needed."https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4734356/ …
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Right. Not as a substitute. Not an either or. Either a mask and eye protection or mask and face shield. (Clinical setting)
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