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by kognate
1836 days ago
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From the abstract of this pre-print and not peer reviewed paper: > Randomized control trials have not clearly demonstrated mask
> efficacy against respiratory viruses, and observational
> studies conflict on whether mask use predicts lower infection
> rates. That is a very strong assertion not backed up with facts.
Especially given that a quick google lands me at: The First Randomized, Controlled Clinical Trial of Mask Use in Households to Prevent Respiratory Virus Transmission https://www.ijidonline.com/article/S1201-9712(08)01008-4/ful.... Which was published in 2008. |
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