1/ K-12 schools open in a few weeks. We did not do the right thing over a year ago to prepare schools to significantly reduce inhalation dose of aerosol particles that convey SARS-CoV-2. Most schools are not doing the right thing. We seem wholly paralyzed as a nation.
2/ In November 2020, I was interviewed by @KGWNews in Portland. Snippets of what I said were used on the show - "We blew it as a nation" and "It's all about lowering (inhalation) dose". kgw.com/article/news/h…
3/ And now we have this, a delta variant far more transmissible, w/ greater impact on children than original virus, & breakthrough infections of those vaccinated that (while 100 to 200 x safer in terms of serious outcomes) can infect others.

cnn.com/2021/07/29/pol…
4/ By not doing the right thing, not getting vaccinated, not preparing schools for reducing inhalation dose, we risk a continuation of schools not reopening (or closing shortly after they do) and the horrific impacts this will continue to have on children.
5/ Reducing inhalation dose in schools is not rocket science. I have described how to reduce dose in classrooms by 95-99% or more in webinars and social media (see corsiaq.com), as have many others, using proven approaches and technologies.
6/ That so many school districts across the country have not done or been able to do what they should have done over the past 18 months is deeply concerning given the rapid spread of the delta variant because of too many not getting vaccinated. A bad combination, folks.
7/ IMO we have gone beyond the point of a moral imperative to do the right thing for our children and our nation. In the absence of compelling health reasons for not doing so, get vaccinated.
8/ If vaccination rates do not increase sharply and quickly there should be more widespread requirements imposed to show proof of fully vaccination for work, travel, & entry to public places.
9/ And there ought to be a Manhattan project that focuses on making school environments healthier by dramatic reductions in inhalation dose of virus-laden aerosol particles during this pandemic & also benefits during cold & flu season, allergy season, wildfires, etc.
10/ This cannot go on. Our nation cannot continue to fail in this horrific battle when we have all of the tools we need to win. Just do it!

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More from @CorsIAQ

25 Jul
1/ Recently heard advertisement for a device that removes 99+% of virus that causes COVID-19 from treated air. To many this might sound like the device removes 99% of viruses in room or building air. This is highly unlikely in a real-world setting.
2/ It is not clear how the company arrived at 99+% removal of SARS-CoV-2 virus and whether this means inactivation of the virus or removal of aerosol particles that convey the virus.
3/ It is not clear whether this figure was derived from a very small chamber with low ventilation that the device was placed in, whether "treated air" means air that flows through the device, or something else.
Read 9 tweets
19 Jul
"fine aerosols constituted 85% of the viral load detected in our study." "Exposure to fine aerosols should be mitigated, especially in indoor environments."

Still in peer review, but preliminary results confirm what many of us have said for 15 mos. 1/

medrxiv.org/content/10.110…
Reduction of inhalation dose of aerosol particles is critical to win this deadly war, particularly amongst the unvaccinated. Mitigate by wearing masks, increasing ventilation (including more activities outdoors), improved central filtration, portable HEPA filtration. 2/
Remember that only about 13% of the world's population is fully vaccinated, the Delta variant is a beast, and 3/
Read 4 tweets
18 Jul
Unsung Heroes of Academia

In academia we talk a lot about, and celebrate, the successes of students and faculty, and we should. IMO we do not talk enough about or celebrate the tremendous contributions of staff, the gears that keep the academic machine running hour to hour. 1/
They advise prospective students, help guide & encourage current students, support advancement of diversity, equity and inclusion, help faculty and students with a wide range of teaching and research activities, maintain and upgrade IT, clean and ... 2/
fix infrastructure, balance books, clean and fix infrastructure, and so much more. 3/
Read 8 tweets
17 Jul
1/ Recently met a couple who are not vaccinated and who do not mask. It was outdoors, yet I wore a mask and distanced. When I tried to present a series of facts about the importance of vaccinations their response was consistently "our friends tell us differently."
2/ These are not folks who fit the stereotypical anti-vaxxers as seen on social media or television. Their beliefs come from friends who attend their church. They were polite and from our conversation I found out also highly educated.
3/ I failed at convincing them that they should become vaccinated. I am not a social scientist or, perhaps most importantly, one of their friends at church. This exercise reinforced my belief that academics on social media will have little impact on increasing vaccination rates.
Read 4 tweets
2 Jun
1/ Been reading the fascinating Dr. Fauci emails released by @washingtonpost. I am so disappointed that Americans are running to their ideological corners on these. No, he did NOT "lie about everything." No, he did not get everything right.
2/ What jumps out to me is the tragedy that experts across disciplines were not pulled together early. Dr. Fauci is a bright & qualified scientist in his lane of expertise, but emails show he did not understand aerosol science or transport of viruses in aerosol particles.
3/ This is particularly true when discussing the value of masks. Imagine had he teamed with one or more exceptional aerosol scientists, and particularly @linseymarr who is a foremost expert on transport of viruses in aerosol particles. Messaging might have been different.
Read 7 tweets
28 May
Indoor Exposure to Fine Particulate Matter and Practical Mitigation Approaches

Videos for the @nasem workshop on this important topic are now available on-line.

Three links in thread below!
April 14th - Sources of Indoor Fine Particulate Matter

How much indoor fine particulate matter is of outdoor origin? What are major indoor sources? How is indoor fine PM transformed indoors?

youtube.com/playlist?list=…
April 21st - Indoor Fine PM Exposure: Health, Metrics, & Assessment

Learn about important factors affecting exposure, health impacts, relevant metrics, and assessments methods

youtube.com/playlist?list=…
Read 4 tweets

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