4 ms·

I will argue this is wrong: Only N95 or better masks have studies proving their effectiveness. I don't think we have good data on weaker masks or even "home mad

by drcode 7y ago

I will argue this is wrong: Only N95 or better masks have studies proving their effectiveness. I don't think we have good data on weaker masks or even "home made" masks- It's totally possible they are also effective, with proper technique. Please somebody show me data that proves otherwise, I'm totally open to it. (Note: I'm not saying I want you to post opinions from people in authority, I'm saying I want to see data)

ceejayoz 7y ago
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3373043/?fbclid=IwAR39J4bEKNngfQ7rwkOmthUouIPV2Rb7BMuZQsyGhbOlr2R4Xv2Ft6EzsXE https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3373043/?fbclid... > Quality commercial masks are not always accessible, but anecdotal evidence has showed that handmade masks of cotton gauze were protective in military barracks and in healthcare workers during the Manchurian epidemic. > The prototype mask achieved a fit factor of 67 for 1 author with a Los Alamos National Laboratory (LANL) panel face size of 4, a common size. Although insufficient for the workplace, this mask offered substantial protection from the challenge aerosol and showed good fit with minimal leakage.
- drcode 7y ago
  Great link!
doublekill 7y ago
No, there is a 2009 study which compares N95 mask efficiency with surgical masks, because they predict that during a pandemic N95 masks will be in shorter supply. (1) They don't find significantly more efficiency for N95 masks, but other studies do find N95 masks slightly better. (2) (1) https://jamanetwork.com/journals/jama/fullarticle/184819 https://jamanetwork.com/journals/jama/fullarticle/184819 (2) https://onlinelibrary.wiley.com/doi/full/10.1111/j.1750-2659.2011.00198.x https://onlinelibrary.wiley.com/doi/full/10.1111/j.1750-2659... Do a search on Google Scholar for "N95" in combination with "virus" or "sars" for more studies. Really a shame that authorities, including the Surgeon General, claim that masks are not protective, despite medical science to the contrary.
- drcode 7y ago
  Great link! Yes, it really hurts me, as a science-based person, to have scientists with authority say things that are unscientific.
- greenburger 7y ago
  Even a simple homemade mask has some efficacy [1] though it significantly less. The primary author’s summary of wether they would be protective is “no” [2] [1] 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... [2] https://twitter.com/chaiclate/status/1232972182667612162?s=20 https://twitter.com/chaiclate/status/1232972182667612162?s=2...
  - deleted 7y ago
    [deleted]

by drcode 7y ago

ceejayoz 7y ago

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3373043/?fbclid=IwAR39J4bEKNngfQ7rwkOmthUouIPV2Rb7BMuZQsyGhbOlr2R4Xv2Ft6EzsXE https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3373043/?fbclid... > Quality commercial masks are not always accessible, but anecdotal evidence has showed that handmade masks of cotton gauze were protective in military barracks and in healthcare workers during the Manchurian epidemic. > The prototype mask achieved a fit factor of 67 for 1 author with a Los Alamos National Laboratory (LANL) panel face size of 4, a common size. Although insufficient for the workplace, this mask offered substantial protection from the challenge aerosol and showed good fit with minimal leakage.

drcode 7y ago
Great link!

doublekill 7y ago

No, there is a 2009 study which compares N95 mask efficiency with surgical masks, because they predict that during a pandemic N95 masks will be in shorter supply. (1) They don't find significantly more efficiency for N95 masks, but other studies do find N95 masks slightly better. (2) (1) https://jamanetwork.com/journals/jama/fullarticle/184819 https://jamanetwork.com/journals/jama/fullarticle/184819 (2) https://onlinelibrary.wiley.com/doi/full/10.1111/j.1750-2659.2011.00198.x https://onlinelibrary.wiley.com/doi/full/10.1111/j.1750-2659... Do a search on Google Scholar for "N95" in combination with "virus" or "sars" for more studies. Really a shame that authorities, including the Surgeon General, claim that masks are not protective, despite medical science to the contrary.

drcode 7y ago
Great link! Yes, it really hurts me, as a science-based person, to have scientists with authority say things that are unscientific.
greenburger 7y ago
Even a simple homemade mask has some efficacy [1] though it significantly less. The primary author’s summary of wether they would be protective is “no” [2] [1] 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... [2] https://twitter.com/chaiclate/status/1232972182667612162?s=20 https://twitter.com/chaiclate/status/1232972182667612162?s=2...
- deleted 7y ago
  [deleted]