What is missing from this CDC school reopening priority list? Airborne virus guidance! Like almost nothing in 33 page document on ventilation except 1 paragraph on open the windows, but only if feasible. Ventilation should be #2 behind masks! #COVID19
cdc.gov/coronavirus/20…
2) Notably absent from new CDC guidance was ventilation. In one short paragraph, CDC suggested schools open windows & doors to increase circulation, but said they should not be “if doing so poses a safety risk or a health risk.” #COVID19 nytimes.com/2021/02/12/hea…
3) “C.D.C. gives lip service to ventilation in its report, and you have to search to find it,” said @j_g_allen, an expert on building safety at the Harvard T.H. Chan School of Public Health in Boston. “It’s not as prominent as it should be.”
4) The section on ventilation does link to more information online. But all of that is buried, relative to a misguided emphasis on cleaning surfaces like outdoor playground equipment, said Linsey Marr, an expert in airborne transmission of viruses at Virginia Tech...
5) “I think the balance is incorrect in putting so much emphasis on cleaning surfaces and almost no emphasis on cleaning the air, given what we know about how the virus spreads,” Marr said.
6) VENTILATION is key. Both ventilation and masks needed to reduce risk indoors. But most buildings not ventilated well enough.

7) How is aerosol different from large droplets? aerosol study indicates that coronavirus is persistent and stable for many hours. Typical air exchange every 20 min to 4 hrs, depending on ventilation. #COVID19
8) Key is ventilation. 🇯🇵 assumed it was airborne from the beginning. Here is how to ventilate your school classrooms if unable to open window but only have 1 door — use two fans near doorway. #COVID19
9) “Until we recognise that #COVID19 is airborne we are setting ourselves up for repeated failure”

P.s. they don’t use masks in video because Australia 🇦🇺 is at almost #ZeroCovid #COVIDisAirborne

10) this should have been the priority for safe school guidance. Ventilation, air filtration, air cleaning. (From @HarvardChanSPH)
11) Many aerosol experts are incredibly frustrated ...
12) for Pete’s sake, even Dr Fauci says it’s airborne.
13) I don’t know how you can just say indoor sports is safe as long as 6 feet. Even outdoors 6 feet isn’t without risk. NFL 🏈 also has done a lot of studies on this—they know 6 feet isn’t enough.

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More from @DrEricDing

14 Feb
This hunch over why CDC didn’t include much on ventilation—out of fear of HVAC insufficiency in holding up reopening—is what I suspect too.

@apoorva_nyc’s school 🧵 is excellent. We don’t always agree on all details, but I respect her as a great writer of >100 Covid articles.
2) @apoorva_nyc’s excellent school reopening debate 🧵 starts here. School debates right now are really heated — over heated IMHO — which too much bashing and unfair labeling from both sides. This is a fair & balanced thread.

?
3) I’m just kinda sorta (read: really) annoyed by the lack of emphasis on ventilation for mitigating risks in schools. I explain why below:

Read 4 tweets
14 Feb
Horrible—People with learning disabilities have been given do not resuscitate orders in 🇬🇧. Mencap reports many with LD had been told they would not be resuscitated if with #COVID19–which caused 65% of deaths of people with LD recently, vs 39% general pop. theguardian.com/world/2021/feb…
2) “The Care Quality Commission said in December that inappropriate Do Not Attempt Cardiopulmonary Resuscitation (DNACPR) notices had caused potentially avoidable deaths last year.”
3) “DNACPRs are usually made for people who are too frail to benefit from CPR, but Mencap said some seem to have been issued for people simply because they had a learning disability. The CQC is due to publish a report on the practice within weeks.”
Read 8 tweets
14 Feb
“False sense of security”—high tech gathering of 49 tech thinkers was held in 4 day “bubble” without mask mandate after arrival+daily testing. Result? ~43% (21 of 49) of tech attendees got #COVID19 soon after, including organizer @PeterDiamandis. 0% of masked support staff. 🧵 Image
2) They were incredibly careful, including doing 452+ total tests (both PCR and rapid antigen), and excluding the 1 person who tested positive initially upon arrival and didn’t attend. Daily tests thereafter. But no distancing or masks after.
diamandis.com/blog/false-sen… Image
3) Dr @PeterDiamandis (an MD PhD innovator whom I’ve respected for years) expressed regret..

“I am sincerely and deeply sorry for the consequences of the choices we made. As scientist, engineer & medical person, I believed we were using the very best that science had to offer.”
Read 21 tweets
13 Feb
Rise in pediatric proportion of Israel 🇮🇱 #COVID19 cases over 2020. Shows the fall/winter trend toward much more cases relatively in children. This data continues into January too. Many reports of relative pediatric surge in Israel continuing in Jan 2021. We need to watch this.
2) We’ve also this relatively higher positivity of children age 5-9 in England 🏴󠁧󠁢󠁥󠁮󠁧󠁿 in January as well. We need to pay attention. @dgurdasani1 believes it is related to gradual primary school reopenings after winter break.
3) Israel 🇮🇱 is seeing a sharp rise in the number of children and teens getting #COVID19, where #B117 rising.

>50,000 children have been diagnosed with #COVID19 since start of Jan, many more than Israel saw in any month during the first or second waves. jpost.com/health-science…
Read 5 tweets
13 Feb
We need to call Moderna vaccine by the true proper name of “NIH-Moderna vaccine”. It was mainly developed at Fauci’s NIAID. Moderna honed its mRNA tech via DARPA grants & also didn’t disclose federal support in patents, violating Bayh-Dole Act. HT @mattbc.
2) @mattbc is right in calling out this nonsense by Moderna to hide it got tremendous federal support for the vaccine in its patent. This is a violation of the 1980 Bayh-Dole Act. And @moderna_tx possibly violated it by not disclosing in 154 patent apps.
washingtonpost.com/business/2020/…
3) Moderna vaccine works folks. @KizzyPhD from the NIH is famously one of the co inventors of the vaccine. But this doesn’t change that Moderna needs to publicly acknowledge in its patents that its vaccine was taxpayer funded and NIH co developed, akin to Oxford-AstraZeneca.
Read 4 tweets
12 Feb
Worrisome—UK 🇬🇧 data shows suddenly higher #COVID19 positivity % in England 🏴󠁧󠁢󠁥󠁮󠁧󠁿 (where #B117 highly dominant) in children ages 5-9, in both boys and girls, sustained each week over 4 consecutive weeks. Ages 0-4 positivity also increasing. Israel 🇮🇱 has also seen kids case trend.
2) As noted by @dgurdasani1, this is all despite these data really underestimating infection in children (as they are based on symptom based testing). And positivity rates appear highest in early year settings (fully open) & primary schools (20% attendance).
3) Dr @dgurdasani1 believe it is related to schools in England 🏴󠁧󠁢󠁥󠁮󠁧󠁿.
Read 16 tweets

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