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katherineefoley's profile
Katherine Ellen Foley
Katherine Ellen Foley
Katherine Ellen Foley
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@katherineefoley

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Katherine Ellen FoleyVerified account

@katherineefoley

covering the FDA for @Politico | kfoley at politico dot com | previously @qz | co-leader @Nov_Project_DCA | #SHERP & @georgetownsfs |my views| she/her |🏳️‍🌈

Washington, DC
scrapfacts.substack.com
Joined March 2011

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    1. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

      Worried about your #neckgaiter and/or #buff you've been using as a mask cos of some headlines you've seen? I gotchu. Tl;dr that study did NOT say that all neck gaiters are worse than not wearing a mask. I'll elaborate in the thread: 1/xhttps://qz.com/1891253/can-you-wear-a-neck-gaiter-as-a-mask-against-covid-19/ …

      108 replies 670 retweets 1,375 likes
      Show this thread
      Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

      2/x First, the study itself: You can find it here: https://advances.sciencemag.org/content/early/2020/08/07/sciadv.abd3083 … published Friday, peer-reviewed and all that. It was NOT a paper testing different kinds of masks; it was showing that there may actually be another way to test masks.

      8:53 AM - 13 Aug 2020
      • 62 Retweets
      • 279 Likes
      • Angel Barron JanPattersonRN #BLM #Mask #WashHands#NoNFTs Tiff☕️ Cynthia Brown Isaiah Austin Barolin Sumedh Topical Depression Kastalia Andy Fields
      6 replies 62 retweets 279 likes
        1. New conversation
        2. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          3/x Why come up with another way? It's wonky: the big standard ways that groups like @niosh and the EU test masks—like N95 masks—require a lot of precise lab work. It's so hard to measure, a casual DIY mask maker can't do it at home, or even a small lab without the right gear)

          4 replies 30 retweets 176 likes
          Show this thread
        3. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          3.5/x Here's one of the standards used in the US: 42 CFR PART 84 https://www.tsi.com/getmedia/53243666-aa99-4c0f-9ac9-eba0b0ffb4c1/AFT-002_2-42CFR84_Testing_Modes?ext=.pdf … Christopher Zangmeister from @NIST told me that its ROUGHLY shooting a measured amount of air and microscopic grains of salt at a mask, and then measuring exactly how much went through.

          4 replies 17 retweets 119 likes
          Show this thread
        4. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          4/x A group from Duke thought it would be great to have a cheaper way to evaluate masks. They came up w one using lasers! They had a speaker wear different kinds of masks and speak a sentence + measured the ways the laser light refracted around any particles (droplets) emitted

          1 reply 18 retweets 145 likes
          Show this thread
        5. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          5/x They had one person say one sentence 10x/mask, with breaks for water/cleaning. The box was ~ a cubic foot (so v small space). And look at these error bars. They're big! That's all reason enough for skepticism. But there's one BIG reason...pic.twitter.com/2iiBSFSNU1

          6 replies 44 retweets 246 likes
          Show this thread
        6. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          6/X ...The authors didn't compare this new method with any existing method! Should they have? Maybe! But that wasn't really the point of their work. This was a proof-of-concept paper that got blown up. I'd hope they do a comparison of methods in the future.

          4 replies 39 retweets 323 likes
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        7. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          Katherine Ellen Foley Retweeted Katherine Ellen Foley

          7/x I've written before about the importance of knowing how to read science news, especially during a pandemic. That's still true now—remember that each new paper is part of an evolving process, and can't replace all of our existing knowledge.https://twitter.com/katherineefoley/status/1247194779655471106?s=20 …

          Katherine Ellen Foley added,

          Katherine Ellen FoleyVerified account @katherineefoley
          There is a LOT of health and medical science in the news right now. If you're new to consuming this kind of news, welcome! Here's a brief guide coronavirus news like a science writer that may help you avoid confusion: https://qz.com/1833181/how-to-read-coronavirus-news-like-a-science-writer/ … 1/x
          Show this thread
          6 replies 151 retweets 632 likes
          Show this thread
        8. Katherine Ellen Foley‏Verified account @katherineefoley 13 Aug 2020

          8/8 It's conceivable that buffs break up larger droplets from wearers and turn them into smaller ones—which could potentially transmit Covid. But we just don't know that to be true yet. Anxious? Wear another kind of mask + maintain distance!https://qz.com/1891253/can-you-wear-a-neck-gaiter-as-a-mask-against-covid-19/ …

          62 replies 67 retweets 376 likes
          Show this thread
        9. End of conversation
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