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zeynep's profile
zeynep tufekci
zeynep tufekci
zeynep tufekci
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@zeynep

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zeynep tufekciVerified account

@zeynep

Complex systems, wicked problems. Society, technology, science and more. @UNC professor. @NYTimes columnist. My newsletter is @insight: http://www.theinsight.org 

floating in a most peculiar way
theinsight.org
Joined August 2009

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    1. Prof. Jose-Luis Jimenez‏Verified account @jljcolorado 13 Jul 2020
      Replying to @jljcolorado @angie_rasmussen and

      However you seem to say that "transmission by inhaled droplets" (i.e. aerosols) has been known for a while, not new info? - Perhaps internally among researchers? - Also at WHO? Is that why they rec ventilation w/o saying why? Recognize it is real but fear of saying "airborne"?

      1 reply 1 retweet 5 likes
    2. zeynep tufekci‏Verified account @zeynep 13 Jul 2020
      Replying to @jljcolorado @angie_rasmussen and

      Having worked with WHO on this, I concur that they are still only recommending masks indoors *if* one meter distance cannot be maintained in the official guidance, and only recently acknowledged the possibility of any droplet/aerosol may remain "airborne" but stubbornly insist +

      1 reply 0 retweets 5 likes
    3. zeynep tufekci‏Verified account @zeynep 13 Jul 2020
      Replying to @zeynep @jljcolorado and

      that cases like the choir practice and the Guangzhou restaurant etc. could still be fomite or droplet (which they do mean ballistic action but it's muddled). They also say no cases that demonstrate fomite transmission but they still consider it a key transmission mode. Confusing.

      1 reply 0 retweets 6 likes
    4. zeynep tufekci‏Verified account @zeynep 13 Jul 2020
      Replying to @zeynep @jljcolorado and

      I see the practical relevance of this confusion because, for example, colleges are preparing to open indoor spaces with masks, hand-sanitizers and distancing but not a lot of discussion, if any, about the importance of ventilation or recognition that 1-2m indoors isn't absolute.

      4 replies 0 retweets 14 likes
    5. Dr. Angela Rasmussen‏Verified account @angie_rasmussen 13 Jul 2020
      Replying to @zeynep @jljcolorado and

      The restaurant, call center, and choir practice all suggest inhaled droplets--whether ballistic or aerosol--are an "airborne" mode of transmission but it's also true that fomites can't be conclusively ruled out. That was obvious to me and why this has been so confusing.

      2 replies 0 retweets 10 likes
    6. Dr. Angela Rasmussen‏Verified account @angie_rasmussen 13 Jul 2020
      Replying to @angie_rasmussen @zeynep and

      I think everyone understands that this virus can be transmitted by airborne routes. I can't speak to WHO's problems communicating that, but it's not shocking that a respiratory virus is airborne. The terminology is what is making this conversation so confusing.

      1 reply 0 retweets 8 likes
    7. zeynep tufekci‏Verified account @zeynep 13 Jul 2020
      Replying to @angie_rasmussen @jljcolorado and

      I think your everyone is the experts, and I don't disagree. What I'm saying is the ordinary public is utterly confused. Is it like mist? Is it okay if we just stand 1m away, even without masks, like WHO recommends? Is a plexiglass barrier enough? Will it spread through vents?

      1 reply 1 retweet 6 likes
    8. Dr. Angela Rasmussen‏Verified account @angie_rasmussen 13 Jul 2020
      Replying to @zeynep @jljcolorado and

      For my part, I've focused less on droplet size and more on how risk reduction measures can have additive effects and people should implement as many as possible. Masks AND distancing AND avoid crowds AND avoid enclosed spaces AND barriers if possible.

      1 reply 2 retweets 21 likes
    9. Dr. Angela Rasmussen‏Verified account @angie_rasmussen 13 Jul 2020
      Replying to @angie_rasmussen @zeynep and

      And there isn't epi data supporting that this spreads through vents or air ducts. Viruses require hosts, so the greatest danger is exposure to other potential hosts, in this case, other people. The public does understand the concept of short-range airborne transmission.

      1 reply 0 retweets 9 likes
    10. zeynep tufekci‏Verified account @zeynep 13 Jul 2020
      Replying to @angie_rasmussen @jljcolorado and

      I think there is general agreement *here* on what the epi data shows (no vents; not mist; also not just ballistic trajectory but not really long-range) but I disagree that public understands short-range airborne transmission. Maybe folks who follow the right experts on Twitter!😬

      1 reply 1 retweet 8 likes
      zeynep tufekci‏Verified account @zeynep 13 Jul 2020
      Replying to @zeynep @angie_rasmussen and

      I'm seeing schools grapple with this. They are super focused on distancing (fine!) but rarely think about ventilation. I know schools that have windows! and pleasant weather for almost all of Fall! and are not thinking of opening windows but are keeping schools closed instead.

      8:35 AM - 13 Jul 2020
      • 2 Retweets
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      • John Stone 🌵 JIndeli Mateo 🏑 Proud European from Austria🇪🇺🇦🇹 🌏 Emilyrobin Vanessa alex rubinsteyn fKen Jackson Meme_Guru2020
      4 replies 2 retweets 9 likes
        1. Dr. Saskia Popescu‏Verified account @SaskiaPopescu 13 Jul 2020
          Replying to @zeynep @angie_rasmussen and

          For sure but another piece is that in the US, ASHRAE has basic requirements so we’re not talking about a room with zero HVAC. That’s why the ventilation is one piece of engineering components, and those are one piece of infection prevention.

          0 replies 0 retweets 3 likes
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        1. Dr Grace Peng 彭‏ @gspeng 13 Jul 2020
          Replying to @zeynep @angie_rasmussen and

          SoCal should be retrofitting classrooms w/ operable windows rn. I'm seeing nada when walking past my neighborhood schools

          0 replies 0 retweets 0 likes
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        1. Yes, I'm A Fire Sign‏ @KateTheFlame1 13 Jul 2020
          Replying to @zeynep @angie_rasmussen and

          Do they also have large, well ventilated bathrooms? Lockers 6' apart? Time and space for feeding all the children while keeping them distanced? How about the teachers lounge? How many times per day will the coffee maker and copier be sterilized? No answers, no school. 🤷‍♀️

          0 replies 0 retweets 0 likes
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