The #Omicron variant has been found in Colorado, thx to thorough surveillance by @CDPHE.

Omicron cases now detected in three counties in the US. I live in one of them. Seems like a great*time to take both individual & collective responsibility to slow spread. How?
Short 🧵 Image
2/ Don't freak out. It's "not a time for panic, a time for caution." You have some indiv control over your COVID health risk:
✅ Vax + boost yourself & family
✅ Wear a tight-fitting, high-quality mask
When possible:
✅ Avoid crowded areas
✅ Move meetings outside
✅ Open windows
3/ Loads of resources on what high-quality mask to choose & the #COVIDisAirborne safety protocols that you can follow.

A couple example recent threads on #BetterMasks:
*
4/ Be aware of the air you share with others. Open windows when possible (Colorado weather has been frighteningly warm, but great for COVID ventilation).

If you can, buy or make yourself, your office or school a HEPA or #CorsiRosenthalBox air purifier.
5/ Also add rapid COVID testing to your repertoire of options. If you think you may have been exposed: test. If you are going to join a holiday or other gathering: test. This will help you & community stay ahead of some of the silent, asymptomatic spread.
6/ You have much control over helping to keep yourself as healthy as possible - whether it be wrt Delta, Omicron, or even the flu. Wash your hands & be smart, but put your attention & effort primarily into reducing airborne interaction. #COVIDisAirborne
Image
7/ BUT ... this is also the time for leaders to bite the bullet & buckle down to protect their constituents, members, or students.
Call your representatives and your school districts to urge for the hard decisions about mask policies. Get them to focus on airborne spread.
8/ See e.g. this thread today from @Lakdawala_Lab. It shows results of #MaskMandates by comparing states w/ similar vax rates, but different policies.

Ends: "What does this mean? We need states to put on STATEWIDE MASK MANDATES FOR EVERYONE INDOORS!!"
9/ Ask your schools to appreciate how they can help reduce both visible & invisible (asymptomatic) spread. Encourage them to:
✅ Test aggressively
✅ Install HEPA filters
✅ Enforce high-quality mask usage by students, teachers
*
* Image
10/ And encourage your schools & offices not to forget about policies surrounding times when masks are OFF. You can't eat or drink w/ a mask on. So there needs to be a plan in place during meals (outside; more attention to air).
*
* Image

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More from @HuffmanLabDU

5 Dec
Nice mask study ~consistent w/ prev. results.
pnas.org/content/118/49…

"... face masks sign. reduce the risk of SARS-CoV-2 infection compared to social distancing. We find a very low risk of inf. when everyone wears a face mask, even if it doesn’t fit perfectly on the face." 1/🧵 Image
2/ The authors perform "upper bound" analyses to get around complexities in modeling risk.

"We conclude that wearing appropriate masks in the community provides excellent protection for others and oneself, and makes social distancing less important."
pnas.org/content/118/49…
3/ I especially like this overview schematic comparing FFP2 (~N95) to surgical mask usage based on combos between two people.

Consistent with the old refrain "any mask is better than no mask, but masks with better fit & filtration protect much more." Image
Read 11 tweets
1 Dec
Led by @RommieAmaro, "a team of 50 scientists has for the first time created an atomic simulation of the coronavirus nestled in a tiny airborne drop of water."

“People have literally never seen what this looks like.”
Article by @carlzimmer @13pt: nytimes.com/interactive/20…
(1/x)
2/ The @nytimes article by @carlzimmer @13pt is a fantastic overview of the complexity of viruses hitching a ride in aerosols. Little drops full of virus, proteins, mucins, surfactants, lung fluid, water.

The simulations are mind-blowingly cool.
nytimes.com/interactive/20…
3/ And crazy complicated: "the researchers needed one of the world’s biggest supercomputers to assemble 1.3 billion atoms & track all their movements down to less than a millionth of a second."

“While molecular modeling is not a new thing, the scale of this is next-level”
Read 7 tweets
30 Nov
"Nearly 40% of COVID cases related to outbreaks in Colorado are at schools"; By @EricaBreunlin @fishnette

This is equally unsurprising & disappointing. I'm torn by thoughts that districts often:
* are overwhelmed
* largely ignore airborne prevention
🧵⤵️
coloradosun.com/2021/11/29/col…
2/ There have been *countless* sources for good, data-backed science on how to radically slow COVID spread in schools. Pick from any number of excellent Colorado experts or widen the net to advocates & experts all over the country and world.
The solutions are ready to be applied.
3/ This was a @ColoradoSun OpEd I wrote earlier this year with one of many impassioned pleas:
Read 19 tweets
29 Nov
Never been a better time to help improve indoor air quality:
* Schools may see COVID increases from holiday travel
* Omicron variant threatening
* Black Fri & Cyber Mon deals at play

If you have any $ margin, consider buying a HEPA filter or two for your local school.
(Short 🧵)
2/ Many commercial HEPA air cleaners you can choose from. Choose:
✅ Enough CADR for room (~2/3 of room area)
✅ HEPA (& ignore ionization/plasma)
✅ Look for lower cost & sound

See excellent thread by @marwa_zaatari w/ helpful tips & data below:
3/ Practical notes on HEPA product specifications:
* CADR (clean air delivery rate) is essentially air flow through the filter X particle removal efficiency
* You want enough CADR to meet room needs
* Can add units to add CADR
* CADR/noise usually listed only for highest speed
Read 16 tweets
24 Nov
Several counties in Colorado put a #MaskMandate order into effect starting today: cpr.org/2021/11/23/den…
It's a great time to remind people that masks aren't all the same. Any mask is more effective than no mask, but better fit & filtration quality upgrades protection.
Short 🧵
2/ There are so many great articles & resources on choosing a good mask, I picked just a few examples.
This article by @yeahyeahyasmin in @TheAtlantic is a great discussion of the need to wear #BetterMasks:
theatlantic.com/health/archive…
3/ This article by @tanyalewis314 is another good example that goes through reasons for #BetterMasks.
scientificamerican.com/article/why-we…
Read 14 tweets
15 Nov
Discussions today about our Thanksgiving got me thinking about what guidance has been put out lately. Thoughts & links in a 🧵. (1/x)

Gathering for the holiday brings risk, but some efforts can make it somewhat safer. A range of thoughts by PH experts:
statnews.com/2021/11/10/cov…
2/ @mimbsy talked with @KatherineJWu on her ideas about how to be safest for Thanksgiving.
theatlantic.com/newsletters/ar…
3/ And @cdcaron put some thought into how to deal with the topic of vaccination at Thanksgiving.
nytimes.com/2021/11/02/wel…
Read 14 tweets

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