Effectiveness of Adding a Mask, Danish Study.Conclusion:The...

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    Effectiveness of Adding a Mask, Danish Study.

    Conclusion:The recommendation to wear surgical masks to supplement other public health measures did not reduce the SARS-CoV-2 infection rate among wearers by more than 50% in a community with modest infection rates, some degree of social distancing, and uncommon general mask use. The data were compatible with lesser degrees of self-protection.
 
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