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FOLKS—I’m going to keep hammering and sharing info about airborne transmission of #COVID19 until I’m blue in the face & WHO + CDC comes out strongly with aggressive guidelines for this. The aerosol evidence so far is overwhelming that indoor stuff so risky nature.com/articles/d4158…
2) Repeat after me. The Coronavirus is Airborne. Say it again. Then read this article why. (HT @mykfish of @FAScientists). #COVID19 slate.com/technology/202…
3) Another renowned scientists (double National Academies inductee) who believes the coronavirus aerosol is inherently airborne for simple everyday understanding.
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Eric Feigl-Ding
@DrEricDing
A note—I’ve deleted a confusing post that some completely misinterpreted about vaccine—we absolutely need Phase 3 trial—I was advocating for compassionate expansion of P3 vaccine enrollment to people in hotspots. I was clear further down a thread but the beginning was murky.
2) I reiterate my previous recap: Expand vaccine via Phase 3 trial expansion to eligible people volunteering for early access in hotspot epidemic areas as part of Phase 3. We are NOT SKIPPING PHASE 3 trial. There’s still randomization in expanded trial access. Don’t misinterpret
3) some argue compassionate use is only for end of life cancer care. But we don’t just have 1 case w/ imminent death—we have thousands. 1200-1400 per day dying in US alone. Expanding P3 trial enrollment in hotspot areas could have a huge impact now even if 50/50 randomization.
Read 9 tweets
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Eric Feigl-Ding
@DrEricDing
Wow. CDC reports of a huge superspreading event in 260 kids+adults from YMCA camp. ~1/2 children aged 6-10 positive. 44% aged 11-17 positive.

➡️#COVID19 SPREADS IN KIDS.

➡️WHY NO MASKS WEARING?

...oh wait @BrianKempGA blocked mask mandate rules.
ajc.com/news/coronavir…
2) Camp required a test <12 days before arriving & attempted "pods"

Masks required for staff but NOT campers

Clearly these measures not enough for control. And using the pods is akin to the cohorting that CDC suggested. This is likely not adequate.
3) Here is the CDC report of the attack rates (incidence rates). Pretty uniform scores the board - if anything young adults lower risk likely because camp counselors wore masks. cdc.gov/mmwr/volumes/6…
Read 6 tweets
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Eric Feigl-Ding
@DrEricDing
📍HEADS UP: I’m going to be amplifying key scientists who work in AEROSOL transmission, because critical right now.

💡First—HOW TO MEASURE ROOM’s AEROSOL INFECTION RISK? You first need to measure a room’s VENTILATION RATE. Dr. @jljcolorado has a calculator + cheap $159 method!
2) Professor Jimenez has developed an easy to use calculator for aerosol transmission risk for a room. You don’t know how safe a room is to be in unless you do air flow calculations with environmental engineering formulas. Luckily there is a calculator. docs.google.com/spreadsheets/d…
3) EXCERPT: Can the ventilation rate be estimated with a portable CO2 meter?

In research, we measure the ventilation rate using a “tracer release” experiment. We release a puff of an inert, non-sticky gas that we can measure with high time resolution.
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