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Richard Corsi, PhD, PE (Texas) Profile picture
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Feb 10 • 4 tweets • 1 min read
1/ Me! Here! Please call on me! Over here! Please!

Answer: Significantly reduce inhalation dose of virus-laden respiratory aerosol particles.

How? The 3Rs.
Remove the source.
Reduce the source.
Remediate indoor air.

time.com/6252107/we-don…
2/ Remove source = Test & isolate, stay home if feeling any symptoms, etc. Y'all should know the score by now, right?

Reduce source = Communal protection by everyone wearing a mask to reduce emissions from those infected. Sadly, communal protection seems forever off the table.
3/ Remediate indoor air = wear a high-quality mask (e.g., N95 to remediate the air you inhale), increase ventilation, improve filtration, add filtration (including standalone HEPA air cleaners and/or #CorsiRosenthalBox es), employ UVGI.
4/ That's it. Repeated tens of thousands of times by those who get it over the past three years. So, you want to slow the spread of COVID-19? Just do it. It ain't rocket science, folks. Never has been.

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More from @CorsIAQ

Richard Corsi, PhD, PE (Texas) Profile picture
Jan 27
1/ The guiding principles of the original #CorsiRosenthalBox design were (1) cost-accessibility (reduce disparities in ability to breathe cleaner air) & (2) effectiveness (in range or better of more expensive commercial HEPA air cleaners). (photo courtesy of @JimRosenthal4)
2/ The original concept exceeds expectations in each area and has now been proven highly effective by many researchers w/ additive equivalent ACH that easily get many classrooms above 9-10 equivalent ACH (CR Box + ventilation) at relatively low cost.
3/ The recent NIOSH/CDC study indicates that two #CorsiRosenthalBox es in a classroom can add greater than 12 ACH to ventilation ACH - likely exceeding 15 equivalent ACH total. As some context, this exceeds ventilation design for most hospital isolation rooms. Yep. Knew that.
Read 7 tweets
Richard Corsi, PhD, PE (Texas) Profile picture
Jan 20
1/ The common cold does not do this. Taking simple precautions to not become infected is smart, folks.

Infected = much higher risk of cardiovascular disease and related death.

eurekalert.org/news-releases/…
2/ (n = 160,000 participants) "COVID-19 patients had a greater likelihood of several cardiovascular conditions compared with uninfected participants in both the short- and long-term including myocardial infarction, coronary heart disease, heart failure, and deep vein thrombosis."
3/ "Risks of some cardiovascular conditions – for example stroke and atrial fibrillation – were elevated in COVID-19 patients in the short-term but then returned to normal levels."
Read 8 tweets
Richard Corsi, PhD, PE (Texas) Profile picture
Jan 7
1/ Study by researchers at NIOSH/CDC add to the MOUNTING evidence that shows the #CorsiRosenthalBox to be a highly-effective means of lowering inhalation dose of virus-laden respiratory aerosol particles in classrooms.

sciencedirect.com/science/articl…
2/ "Do-It-Yourself (DIY) air cleaners are an alternative to commercial devices."

A much lower cost alternative. About $4.20/student per year. One Grande Caffe Mocha per student per year.
3/ "Our results show DIY air filtration units can be an effective means of reducing aerosol exposure."

Indeed, as I have been presenting in webinars for well over a year. This has been a no brainer from the start, folks. No brainer. Hope NIOSH/CDC paper helps lower resistance.
Read 13 tweets
Richard Corsi, PhD, PE (Texas) Profile picture
Jan 3
1/ SARS-CoV-2 in Davis CA wastewater through December 31 showing S and N genes.

"The N and S genes show the total incidence of COVID-19 because these two genes generally are present in any form of the virus."
2/ A generally harmless virus called pepper mild mottle virus or PMMoV, which is one of the most abundant viruses in human waste is also measured and used to normalize teh SARS-CoV-2 data.
3/ PMMoV is an indicator of fecal strength of each sample, which is a function of different population sizes, rain or water usage.
Read 6 tweets
Richard Corsi, PhD, PE (Texas) Profile picture
Jan 3
The First Annual #CorsiRosenthalBox Awards continue. Threads embedded in this tweet recognize all of the outstanding recipients of earlier awards. We end w/ the top CR Box Award - The Protecting Others Award (POA) (I know - the name of the award keeps changing).
The Protecting Others Award underscores a movement originally intended for making effective air cleaning accessible & also to provide an opportunity to build in bulk to help others lower their inhalation dose to virus-laden and other aerosols. This award recognizes the latter.💙
There were so many GREAT entries for the POA. So, we will highlight the g💙💙dness of many before announcing our top three awards. I note again that these awards are only for those who submitted replies to the original call as there are others out there doing great work!
Read 23 tweets
Richard Corsi, PhD, PE (Texas) Profile picture
Jan 2
And the First Annual #CorsiRosenthalBox Awards continue. Thanks for all who replied with your entries.

The next award is for Best Video Display of a CR Box. we have two recipients in 2022.
The 2nd place award for Best Video Display of a CR Box goes to ....

Sansnom! Also note the creative use of a 12V battery --- nice innovation as well, @86thistimeline!

The 1st place award for Best Video Display of a CR Box goes to ...

Iiana Fisher @ilanafish. Congratulations, Ilana!

Read 17 tweets

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