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[edit after re-reading parent comment] This article offers some links and data on the effectiveness of even homemade masks at filtering particles: https://sma

• oski 7y ago
  The link you posted is commercial (selling air filters), better to link to the original study from which this is based: https://www.researchgate.net/publication/258525804_Testing_the_Efficacy_of_Homemade_Masks_Would_They_Protect_in_an_Influenza_Pandemic https://www.researchgate.net/publication/258525804_Testing_t...
• pacala 7y ago
  Liability. Tell people that makeshift masks offer coronavirus protection, and hear the class action lawyers sharpening their quills from a hundred miles. Even if the masks, deployed at scale, help reduce the R factor.
  • oski 7y ago
    Just have employees sign a waiver.
    • pacala 7y ago
      That's a good point. To complete: Just tell CDC to tell employers to have employees sign a waver.