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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. Stephen Kinsella‏Verified account @stephenkinsella 5 Dec 2020

      Face masks considerably reduce #COVID-19 cases: they are also remarkably cost-effective as a public health measure. Maybe the most cost effective public health measure: apart from washing your hands.https://www.pnas.org/content/early/2020/12/02/2015954117 …

      6 replies 34 retweets 98 likes
    2. Orla Hegarty‏ @Orla_Hegarty 5 Dec 2020
      Replying to @stephenkinsella

      clean air is far more important than clean hands, #Covid19 is an environmental pandemic & airborne; the risk from surfaces (formites) is low, the real risk is indoor environments with inadequate ventilation

      3 replies 0 retweets 12 likes
    3. Stephen Kinsella‏Verified account @stephenkinsella 5 Dec 2020
      Replying to @Orla_Hegarty

      That’s not the point of the study though. And altering ventilation systems, while clinically efficacious, may well be cost prohibitive and takes time. Whereas wearing a mask, and washing hands is cost effective and fast.

      3 replies 0 retweets 2 likes
    4. Gavin Sheridan‏Verified account @gavinsblog 5 Dec 2020
      Replying to @stephenkinsella @Orla_Hegarty

      Though as Orla has said, we arguably overegged the formite risk and perhaps underplayed the indoor/aerosol/no ventilation risk, when most of the risk is with the latter. Masks is cost effective for sure, but washing hands may have been *over*emphasized.

      4 replies 0 retweets 8 likes
    5. Stephen Kinsella‏Verified account @stephenkinsella 5 Dec 2020
      Replying to @gavinsblog @Orla_Hegarty

      It’s entirely possible, in fact I think there’s a ventilation study being done to assess this. Not sure about the hand washing vs not in terms of being studied.

      3 replies 0 retweets 0 likes
    6. Orla Hegarty‏ @Orla_Hegarty 5 Dec 2020
      Replying to @stephenkinsella @gavinsblog

      Stephen, where’s the ventilation study being done? Tbh it’s far broader than ventilation; the virus is biological but the pandemic is entirely environmental; there is opportunity for science-based suppression ... webinar this week with @johnwenger9 & mehttps://youtu.be/OHKnF9lbW6U 

      1 reply 0 retweets 2 likes
    7. Orla Hegarty‏ @Orla_Hegarty 5 Dec 2020
      Replying to @Orla_Hegarty @stephenkinsella and

      formites: Lancet https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30678-2/fulltext … & ECDC https://www.ecdc.europa.eu/en/covid-19/latest-evidence/transmission …

      1 reply 0 retweets 0 likes
    8. Stephen Kinsella‏Verified account @stephenkinsella 5 Dec 2020
      Replying to @Orla_Hegarty @gavinsblog @johnwenger9

      So both of these say (to me at least) venitilation is an issue but not the biggest one. The only kind studies I’ve seen convincing me of the need to be careful indoors are ones like this. https://zeynep.substack.com/p/small-data-big-implications … But all v small.

      2 replies 0 retweets 1 like
    9. Gavin Sheridan‏Verified account @gavinsblog 5 Dec 2020
      Replying to @stephenkinsella @Orla_Hegarty @johnwenger9

      Good read here. And @zeynep is a good person to cite because she's been talking about masks AND ventilation from the outset (but less so fomites)https://www.statnews.com/2020/11/10/restaurants-gyms-were-spring-superspreader-sites-occupancy-limits-could-control-spread/ …

      1 reply 0 retweets 4 likes
    10. Stephen Kinsella‏Verified account @stephenkinsella 5 Dec 2020
      Replying to @gavinsblog @Orla_Hegarty and

      She is fantastic. Have her book on the pile to read.

      2 replies 0 retweets 1 like
      zeynep tufekci‏Verified account @zeynep 5 Dec 2020
      Replying to @stephenkinsella @gavinsblog and

      Thank you

      9:20 AM - 5 Dec 2020
      • 1 Like
      • Orla Hegarty
      1 reply 0 retweets 1 like
        1. New conversation
        2. Orla Hegarty‏ @Orla_Hegarty 5 Dec 2020
          Replying to @zeynep @stephenkinsella and

          Zeynep, a comment on restaurant case; type of air-con unit is a factor, as these units don’t provide fresh air; they draw in room air, chill/dehumidify air & blow it back out; & the specific reduced temp/humidity of air is close to optimum conditions for long half life of Covid19

          1 reply 1 retweet 2 likes
        3. Orla Hegarty‏ @Orla_Hegarty 5 Dec 2020
          Replying to @Orla_Hegarty @zeynep and

          in lab conditions (10°C, low AH) Covid19 has half-life of 24 hours+, compared to half-life of <2hrs at 26°C & higher humidity ..& this aligns with outdoor environmental conditions in Spring hot-spots (yellow zone) of 5-11°C, low RH ..& with later Melbourne winter conditionspic.twitter.com/K6AbMOtw5D

          0 replies 0 retweets 0 likes
        4. End of conversation

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