If CDC says we parents and teachers are on our own for schools, then we need to start getting creative with our own air disinfection devices… the Jerry-rigged air cleaning device below tapes together several MERV13 filters into a cube called a “Corsi Box” (named after @CorsIAQ).
2) Here is more details on how to assemble a Corsi box for air cleaning classrooms. See thread 🧵
3) Indoor air disinfection with portable HEPA filters also works. And very effective
4) I’ve been venting about school ventilation and air quality for quite a while, as some of you know. The key is the concept of enough air exchanges per classroom - either via ventilation of fresh air (preferred), or via disinfection via HEPA or UV. But beware of bad ionizers.
5) The DIY Corsi Box (also called by some as the Comparetto Cube) as a low cost way to filter the air, is also a good kids learning activity.

Though nota bene—don’t touch the sides of the filter after it starts running. Virus particles can stick to it.

nbc12.com/2021/02/20/car…
6) Air disinfection for classrooms with portable HEPA is also very affordable— cost is just <$10 per student to start and only $11/student for 3 years, according to
@CorsIAQ
. Much less than cost of most school books.

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More from @DrEricDing

11 Jul
⚠️New #COVID19 recommendations amid spike in #DeltaVariant ➡️All Mississippi residents ages 65+ & anyone with chronic conditions, should avoid all indoor mass gatherings **regardless of vaccination status**. Good. Delta is ~4x more severe than old strain🧵 mississippitoday.org/2021/07/09/msd… Image
2) The rapid rise of Delta variant cases and virus outbreaks combined with the state’s low vaccination rate led the Mississippi Department of Health to release a slew of new COVID-related guidelines on Friday.
3) The new recommendations, which will stay in place through July 26, also include:

📍All unvaccinated Mississippians wear a mask when indoors in public settings.

📍All Mississippians 12 years of age and older get vaccinated.
Read 15 tweets
11 Jul
A new “signal” of new variant—Public health officials are investigating a new variant that could have emerged in the North-East 🏴󠁧󠁢󠁥󠁮󠁧󠁿 even amid #DeltaVariant takeover—the region has seen fastest rise in #COVID19 cases in past 7 days. How about #ZeroCovid now? inews.co.uk/news/politics/…
2) “Six out of the top 10 UK areas with the highest prevalence for Covid-19 in the past week are now in the North-East, including South Tyneside, where there are 828.6 infections per 100,000 people, and Newcastle-upon-Tyne, with 744 per 100,000.”
3) “While the Delta variant is the dominant variant in the region, as in the rest of Britain, scientific advisers have noticed a “signal” in the North-East surge which could be linked to a new strain that originated in the UK.”
Read 7 tweets
11 Jul
Impeach Bolsonaro: 54% of Brazilians want to impeach @jairbolsonaro amid his poor #COVID19 pandemic handling & recent allegations that Bolsonaro’s federal officials solicited bribes to fast-track and overpay for the Covaxin vaccine made by Bharat Biotech. reuters.com/world/americas… Image
2) In recent weeks, Brasilia has been rocked by allegations that officials solicited bribes to fast-track and overpay for the Covaxin vaccine. In late June, Brazil's Health Ministry suspended the 1.6 billion-real ($304 million) deal. reuters.com/world/americas…
3) This Bolsonaro-Covaxin scandal is real…

Brazilian Health Ministry official alerted President Jair Bolsonaro to internal pressure he was facing to buy a COVID-19 vaccine made by Bharat Biotech, a Congressman who attended the meeting said on Wednesday.
reuters.com/world/americas…
Read 8 tweets
10 Jul
⚠️Bad trend—Netherlands reports a near vertical >800% increase in new #COVID19 cases in 1 week. Greece 🇬🇷 and Spain 🇪🇸 nearly matching that surge. @WHO now reports over 2 dozen countries with “near vertical” sharp rises in cases—mostly #DeltaVariant. Pandemic “Act 2” has begun.🧵 Image
2) Listen to Dr @mvankerkhove talk about the sharp global rise in cases. “2 dozen” countries with **near vertical rise** in #COVID19 cases. Let that sink in. #DeltaVariant is damn serious.

3) How does Netherlands, Greece, Spain compare in vaccinated %? All 3 countries ~ 40% fully vaccinated. Not that low relative to the world or rest of Europe. UK is 50% vaccinated and it’s still seeing hospitalizations & deaths rise. Keep vaccinating—#DeltaVariant coming. Image
Read 10 tweets
10 Jul
Sobering—The most vulnerable folks may have no choice but to restart shielding (ie stay at home) after remaining England 🏴󠁧󠁢󠁥󠁮󠁧󠁿 #COVID19 mitigation rules are removed on 19 July, Sarah Gilbert warns. Who is she?—the chief creator of Oxford/AstraZeneca vaccine.
inews.co.uk/news/politics/…
2) “The Government has not yet issued updated guidance for how 3.8 million people classed as clinically extremely vulnerable should protect themselves from Covid-19 as social distancing and compulsory mask wearing comes to an end.
3) “Dame Sarah Gilbert, who led the Oxford vaccine team: “In people who have been vaccinated and have had the two doses, they will be well protected against disease that is severe enough to put them in hospital, and death. But that’s only about half have had their two doses.
Read 6 tweets
10 Jul
Florida #COVID19 cases and hospitalizations both rising. 5,790 new coronavirus cases today, the biggest one-day increase since April. I’m going to wager it’s mostly likely the #DeltaVariant. HT @BNODesk.
2) Reminder @RonDeSantisFL, mass infection approach like UK should never be an option! Please do something
3) Dear @RonDeSantisFL, please stop the #COVID19 surge - don’t be morally empty and “Epidemiologically stupid” like Boris Johnson.
Read 5 tweets

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