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Joseph Allen Profile picture
@j_g_allen
Dec 11, 2022 • 9 tweets • 4 min read • Read on X
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If you read this, you'll see that it matches the recs in our Lancet @CommissionCovid report on "The #FirstFour Strategies Every Building Should Pursue".
🧵
Lancet: Commission building systems (give them a tune-up)

WH: "verify proper ventilation in federally owned buildings"
Lancet: improve ventilation

WH: "Providing tools and guidance documents for improving ventilation"
Lancet: Upgrade to MERV-13 filters

WH: "Established MERV-13 filters as minimum"
Lancet: Use portable air cleaners, if needed

WH: "Schools can use funding provided through the American Rescue Plan to improve ventilation in schools...portable air cleaners" (amongst other things)
This new across-agency focus on IAQ goes beyond the #FirstFour that we recommended, and represents and incredible advancement of #HealthyBuildings principles across the Fed Gov't. They are walking the walk.

Links to reports in next posts in the thread
FACT SHEET: DEPARTMENTS AND AGENCIES COMMIT TO CLEANER INDOOR AIR ACROSS THE NATION

whitehouse.gov/ostp/news-upda…
The Lancet Covid-19 Commission, Task Force on Safe Work, Safe School, and Safe Travel
----
The First Four Healthy Building Strategies Every Building Should Pursue to Reduce Risk from Covid-19
----
covid19commission.org/safe-work-trav…
The Lancet Covid-19 Commission Task Force Team👇

//END//

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More from @j_g_allen

Joseph Allen Profile picture
Jun 15
On H5N1, milk and this NEJM letter
There are some really important points being missed. It's worth reading the whole letter, including the supplemental info (the authors do a good job of explaining everything); it's not very long...
1/n
 nejm.org/doi/full/10.10…
Relevant background
There are two main commercial pasteurization approaches: 63C/30min or 72C/15 secImage
Things I find important/interesting in NEJM article:
The authors find that the 63C process works and "has a large safety buffer."Image
Read 13 tweets
Joseph Allen Profile picture
Apr 7
The Lancet Commission on Lessons for the Future from the Pandemic

The multiple failures of intn'l cooperation include
1. lack of timely notification of initial outbreak
2. costly delays in acknowledging the crucial airborne exposure pathway of SARS-CoV-2
thelancet.com/journals/lance…
Do you know how we got this "costly delays in acknowledging the crucial airborne exposure pathway of SARS-CoV-2" into the manuscript? Steady work by this incredible Lancet Task Force (you'll recognize the crew) Image
And did you know we also got this into the *first* report by The Lancet Covid-19 Commission, published Sept 2020, when airborne denial was still rampant?

"Mitigating airborne transmission is especially crucial"

"Proper conditions indoors have the potential to reduce the spread of COVID-19; conversely, improper conditions, such as limited ventilation and filtration, can make indoor environments high-risk settings"
thelancet.com/journals/lance…
Read 4 tweets
Joseph Allen Profile picture
Jan 27
"Popcorn Lung" was coined when workers at a microwave popcorn packaging facility developed the disease after inhaling diacetyl, one of the chemicals used to create fake butter flavor. Diacetyl, and its many chemical cousins, create candy flavors, too. Fine to ingest; dangerous to inhale.

These same chemicals are often found in e-cigs/vapes.
I wrote about "Popcorn Lung" and the flavoring chemicals used in e-cigs/vapes a few years ago:
nytimes.com/2018/04/04/opi…
Image
There's more to the e-cig/vape story than the flavoring chemicals and diacetyl even. Check out this thread on a related chemical, methylglyoxal, that can be formed through the heating process in e-cigs/vapes. (I can't understand why this hasn't gotten more attention...)
Read 28 tweets
Joseph Allen Profile picture
May 12, 2023
Historic day. For 40 years we've been saddled with bare minimum ventilation standards that were not designed for health. Today, CDC released the 1st ever federal guidance on higher ventilation standards, and ASHRAE also released a doc for public comment🧵
cdc.gov/coronavirus/20…
CDC specifies 5 ACHe.🙌 This is exactly in-line with the recommendations from our Lancet Covid-19 Commission. It's smart. It's evidence-based. It's understandable. It's actionable. It's achievable. It will keep people healthier.
CDC also makes excellent recommendations with regard to focusing on building system performance (commissioning), and recommending MERV-13 filters as new min. These are also in-line with The Lancet recs and best practice
Read 6 tweets
Joseph Allen Profile picture
Mar 26, 2023
Current ventilation rates are not designed for Covid-19 (or any other respiratory pathogen)

That's why our Lancet Covid-19 Commission Task Force on Safe Work/School/Travel published this report.
🧵
Task Force had widespread agreement on:

1) current targets too low
2) getting bldgs off current minimums would lead to big gains
3) coalescence around target values, across experts and metrics
4) we want to propose something that moves this convo forward
5) there is urgency
We *intentionally* provided recs across three metrics (all have pros/cons; convo was *stuck* here) and with good/better/best (creating new minimums *and* a north star both important)
Read 8 tweets
Joseph Allen Profile picture
Mar 20, 2023
Higher ventilation rates in schools associated with better math test scores.

This study, and many more, in the Harvard Healthy Buildings program report, "Schools for Health": schools.forhealth.org
5% decrement in "power of attention" in poorly ventilated classrooms...researchers equate this roughly to how a student might feel from skipping breakfast. schools.forhealth.org
Former US Secretary of Education Betsy DeVos did an interview with 60 Minutes in 2018 in which she said something that should make anyone reading this book fall off his or her chair: “We should be funding and
investing in students, not in school buildings." (!)
Read 4 tweets

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