We urgently need to focus on ventilation. Six months into a respiratory pandemic, we're still not given sensible and practical guidance against short-range aerosol—airborne—transmission of COVID. I wrote about the science & what it means we should do now.
Ventilation in July is like masks in March. There's accumulating evidence AND many practical steps to take. Some are within our reach for free or cheap, and we should prioritize the expensive ones. Instead, we're stuck, without guidance. Let's change this.
Some steps to mitigate short-range aerosol transmission are cheap, even free. Some are expensive and require needed upgrades to our infrastructure. There is also a lot of unnecessary fear and scaremongering! Don't fall for it. Read, be informed, mitigate
It does seem like when we're talking in 5 years about how we got out of this, improvements in indoor ventilation systems could be a huge part of the answer.
Correctly understanding the specifics of airborne transmission of COVID is *really important* because it changes many things about our guidance on masks and distancing like who should mask? When? How? When is six feet not enough? Should we mask outdoors?
"How is it that six months into a respiratory pandemic, we still have so little guidance about this all-important variable, the very air we breathe?" Important, helpful piece by
This article is a model of science communication. If you want to get abreast of the droplet v aerosol debate, take time to read it. And follow ⁦. ⁩
I believe this is an important piece by . We need a nationwide focus on VENTILATION—air flow, air exchange, and filtering—beginning first and foremost with schools, and then every other indoor venue.
A good article (from today) on airborne COVID spread and indoor/outdoor transmission
Six months into the pandemic, public-health guidelines are still largely glossing over the most important form of coronavirus transmission. reports
Because of my piece on ventilation, I keep getting asked for practical advice. CDC and health authorities should update guidelines. But for individuals? I'd say avoid Japan's 3Cs: closed spaces, crowded places, close-range conversations. And wear masks.
My morning text to #TonyFauci, which led to a call during his powerwalk. He said he'd share it w/ (hopefully when Redfield comes up for air from licking you-know-whose you-know-what). An amazing article, ! A must-read for everyone:
Everyone's got their own rules about how they're approaching life right now, but I think this helps inform you in making those choices
Deep gratidude to & Dr. Hitoshi Oshitani. They work so hard to communicate the science with the public & it's been an honor to try to put it all together. 🙏
I'm late on this must read. It's been clear for months that airborne transmission is occurring for SARS-CoV-2, but we don't know if it's the primary driver. IMO, super spreading events are plausibly mostly due to indoor airborne transmission.
This is typically excellent from , who has been right about pretty much everything since March. Forget about the crowded beaches - we need to talk about ventilation
Why Aren't We Talking More About Ventilation? “of 1200 super-spreader events just one incident is classified as outdoor transmission, where a single person was infected outdoors by their jogging partner, and only 39 are classified as outdoor/indoor events”
“The importance of aerosols may even help explain why the disease is now exploding in the southern United States, where people often go into air-conditioned spaces to avoid the sweltering heat.” via
"Once we pay attention to airflow, many other risks look different," reports
As stated in this great article I answered the question (asked early in spring) “should we go to 100% outside air in our campus buildings?” from ⁦’s facilities engineers with a resounding YES. ⁩
Zeynep Tufekci is a gift to sanity: We Need to Talk About Ventilation
Note to editors assigning COVID pieces. This is ~5K words, (Had another 1K on hygiene theater when scooped me with a great piece!). Overwhelming feedback: thank you for the details! Do let your writers go long and treat the reader as a partner.🙏
I've been thinking about this really good piece and . . . philosophy of science. 1/
This is one of the best explanations of coronavirus risk I have read. One thing I am most nervous about in teaching the 19th and early 20th c buildings at is ventilation. Lots of other colleges have old buildings. Please ask about ventilation.
In addition to 's many other contributions, she has been consistently ahead on COVID-19: she was arguing for broad mask-wearing in early March. Ventilation is the next frontier.
We Need to Talk About Ventilation. How is it that six months into a respiratory pandemic, we are still doing so little to control airborne transmission?
"It took centuries to understand how pathogens such as the plague, smallpox, and yellow fever were transmitted and how they worked." We need to understand COVID-19 better and sooner. This is such an important story by
A really excellent article summarizing many aspects of what we know and don't know about the factors leading to the spread of SARS-CoV-2 by
"[remember] the many televised indoor events where the audience..are sitting politely distanced & masked, listening to the speaker, who is the only unmasked person in the room[?] .. pointed out to me that this is completely backwards.."
If your school is holding f2f classes and is not doing anything about ventilation or filtration ... you might want to read this and start sounding the alarm
This is must reading to understand droplet versus aerosol spread of #COVID19 and how to adjust your behavior, masking and indoor and outdoor activities to avoid infection. and need to read this before the next #CNNTownHall!
Failure to account for COVID's airborne transmission is one of the major reasons why UofT’s Reopening Plan is NOT Safe Enough. must ’take a pause’ on most in-person teaching for the Fall 2020 semester in favour of online-only teaching.
People have been asking about germicidal UV lights for killing the virus in indoor spaces. It is a real tool, and hospitals use it, but I did not include that in the article because it is not something to try without calling in the experts. Real dangers.
Several great articles published today stress the importance of proper ventilation, in addition to distancing & masks, in limiting the spread of COVID: 1) 2) But there's a related issue that demands more attention: Winter is coming
And of course Zeynep's great article today, which basically says "do not do any of what the John Lewis funeral is doing"
This is so right. Focus on ventilation and not "deep cleaning".
Critically important piece from about the urgent need to improve ventilation & mitigate indoor airborne transmission:
TLWR - Tinybit Long, Wellworth Reading: Six months into the pandemic, we need to pay more attention to the most important form of coronavirus transmission. reports
We are stuck practicing hygiene theater—constantly sanitizing surfaces & deep cleaning—while not noticing the air we breathe (nor investing enough in upgrading HVAC systems, portable HEPA filters, increasing ventilation & uptake of outdoor air)
A few months ago I posted a video on my YouTube channel about how #coronavirus is really an indoor disease. This article discusses the indoor/outdoor nature of #coronavirus #COVID__19 Why Aren't We Talking More About Ventilation? - The Atlantic
I'd add is that overdispersion plus short-range aerosols do modify some recommendations (masks indoors no matter distance) and adds a few new ones (ventilate; speaker should remain masked etc.). These are not currently in guidelines. I wrote about it here
Six months into the pandemic, public-health guidelines are still largely glossing over the most important form of coronavirus transmission. reports
Good, extended piece on aerosol transmission, which draws on interviews of a number of scientific experts. Its title says it all
This, from and , is important to read as we try to understand how to move forward
Why aren't talking more about ventilation
Great article - given the possibility of 'short range aerosols' and hardly any outdoor super-spreading, ventilation must be considered more. #COVID19 #epitwitter
. is one of the truly essential voices in this pandemic, with one spot-on analysis after another. Here’s her latest on the thorny matter of transmission, “airborne”, and ventilation. Scholarly, clear, nuanced.
Six months into the pandemic, public-health guidelines are still largely glossing over the most important form of coronavirus transmission. reports
The nitty gritty of airborne #COVID19 transmission has been an atmospheric science story: aerosols vs droplets, indoor vs outdoor, mask efficacy etc. See the piece below and check out , & for more.
Why Aren't We Talking More About Ventilation?
“Many scientists believe that [SARS-CoV-2] is emitted from our mouths in much smaller particles, which are infectious but also tiny enough that they can remain suspended in the air, float around, be pushed by air currents, & accumulate in enclosed spaces”
Why Aren't We Talking More About Ventilation? - The Atlantic
We Need to Talk About Ventilation: How is it that six months into a respiratory pandemic, we are still doing so little to mitigate airborne transmission? via
“if aerosols are crucial, we should focus as much on ventilation as we do on distancing, masks, and hand-washing” Why Aren't We Talking More About Ventilation? - The Atlantic
When considering the impending Fall semester, the lack of discussion of airflow and the possibility of teaching outside (much less opening windows) seems strange and scares me
Airflow mitigation is great in theory, but impractical. Can we really open school based on room-by-room ventilation assessments? Think of all of these school mitigations as SPF 10 – Good for some protection but not long exposure. /9
One of the first questions I asked myself about coronavirus was whether it can be transmitted by droplets suspended in the air. It appears it can be, but extent to which this happens is crucial, esp for schools (small space, relatively prolonged occupancy)
We Need to Talk About Ventilation Yes! Indoors poses much higher & different risks than outdoors bc of ventilation. FOLLOW THE SCIENCE #COVID19 #science
Just sent this article to my kids' school
I don't think people plugged into a good twitter hivemind realise how slowly info travels via the 20th century systems many people rely on. These actions don't seem like theatre, just businesses and customers remembering the 24hr messaging about surfaces
We Need to Talk About Ventilation Yes! Indoors poses much higher & different risks than outdoors bc of ventilation. FOLLOW THE SCIENCE #COVID19 #science
this this this >> We Need to Talk About Ventilation