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Eric Feigl-Ding Profile picture
@DrEricDing
Jan 24, 2021 • 22 tweets • 10 min read • Read on X
SWITCH TO PREMIUM MASKS—I’ve been saying it for months. We need to switch to KN95, KF94, or European FFP2 masks ASAP. The new #b117 #COVID19 is just too contagious. Cloth isn’t enough anymore folks. Germany 🇩🇪 & Austria 🇦🇹 mandating on all public transits. washingtonpost.com/world/europe/e… Image
2) there are many masks that have 94/95% filtration... Image
3) N95 masks are more rare outside of hospitals because they are in shortage and needed by HCWs. You might find some NIOSH N95 from wood working, but note those are often not fluid resistant. ImageImage
4) Like Germany and Austria, in France, the country’s health advisory council on Monday discouraged the wearing of inefficient cloth and homemade masks, also arguing they may not offer sufficient protection against the more highly transmissible coronavirus variants.
5) of all the masks tested, N95 grade and surgical masks were superior this mask study. N95 class the best — they didn’t test KN95 but we know they are similar in filtration (but less perfect in fit tightness). But KN95 and KF94 and FFP2 all 94/95% good.

advances.sciencemag.org/content/6/36/e… Image
6) FFP2 masks (resemble KN95) in Europe are now $1.2 each these days ($2-3 before) after EU negotiated with manufacturers.

Also get this — low income families get these premium FFP2 masks **for free**!!!
7) Some call FFP2 masks “N95” on some boxes in EU. This was just 2 euros each. Made in U.K. 🇬🇧 as well as in Germany.
8) My favorite premium mask is the South Korea 🇰🇷 made KF94 that everyone wears there. It has a folding system that leaves more space for your mouth — so much that you forget you’re wearing a mask when you’re speaking! You can find them online.
9) Double masking (like Joe Biden when he traveled last year) also works. Or if you have a mask with a vent, wear another mask over the vented one.
10) There are also kids FFP2 and KN95 masks for better fit for kids too. Masks must FIT TIGHTLY or else leakage around nose bridge makes it less effective.

GOOD FIT == mask will expand when u exhale and push inward when you inhale. If your mask doesn’t, it’s too loose.
11) I honestly fiddle with nose bridge of a new mask a lot sometimes when i first get a new one— I press the nose bridge tightly first and then stick it on my nose to shape it. Pre press it then put on nose to shape it most efficiently. If you glasses fog up—there is a leak.
12) There are fake N95 / KN95 being sold right now. Just be careful. I can’t say which are real or fake but they do exist.

Staples and many major stores now sell KN95s. Presumably (?) they sell legit ones. I also directly order KF94 from S Korea & FFP2 from relatives in Europe.
14) To be clear, cloth masks do work too, just to lesser degree. And cloth is to catch your droplets more rather than be good inhalation filters. That’s why cloth works best when >95% of people wear them. But if many anti mask, then that is less effective.
14b) This was last week—they now mandating the premium masks in more places in Europe now. As result they are being given out free or subsidized to just $1.20 each in stores in Europe. We need Biden WH to DPA produce them here soon.
15) For more on the science of masks and an good detailed evidence thread, see this earlier 🧵 below.
16) Why do I care so much?

1 year ago today, I posted the “HOLY MOTHER OF GOD” warning to the world.

Hope it helped some folks keep their families safe. Please be careful everyone.

nymag.com/intelligencer/… Image
17) Why am I so concerned about #B117? Because many many models all show it will likely take over countries in infect and we lose buffer of what little containment we do half if it takes over.
18) Notably, the #B117 variant virus is such a beast—suppose we have 1000 cases/day now... with an R=0.86 we could reduce it to 500/day in 2 weeks.

➡️But w/ added contagiousness of B117 variant that has ~60% higher R, in 2 weeks, 3000 new cases/day instead—

6x vs old ⚠️ Image
19) UK 🇬🇧 former health minister now also urging mandates for premium masks on mass transit and shops. news.sky.com/story/covid-19…
20) What is the best source of premium masks? That would be @projectn95. Their masks are the most thoroughly vetted as authentic. And they are a nonprofit organization.
21) @projectn95 also fulfills N95 grade masks for both public and healthcare providers. Their email is listed below.

I receive zero commissions and not been paid in any way for this post.

@projectn95 is simply one of the best nonprofits.
projectn95.org/ppe-for-public Image
22) A reckoning of all the ways the Trump WH failed on PPE procurement and lack of sufficient mask production.

nytimes.com/2020/11/17/mag…

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More from @DrEricDing

Eric Feigl-Ding Profile picture
Nov 13
⚠️BREAKING—ICU Hospitalized human bird flu case in Canada now officially confirmed as H5N1. Worse, it is the same 2.3.4.4b virus clade (variant group) as the one found in BC🇨🇦 poultry and in Washington state🇺🇸! The hospitalized teenager (with no pre existing conditions) had no animal contact, does not live on farm, had “deterioration quite rapid” and now critical in ICU with ARDS. Canada officials says infectious period is 2 days **prior to symptoms** (ie asymptomatic transmission) and infectious up to 10 days.Image
2) Public Health Agency of Canada's National Microbiology Laboratory (NML) in Winnipeg confirmed that the individual has avian influenza H5N1
canada.ca/en/public-heal…
3) details…

⚠️BAD UPDATE—BIRD FLU HOSPITALIZATION IN CANADIAN TEEN

Summary 🧵 of the live press conference with Canada’s British Columbia health officer.

📌The teen is in intensive care.
📌Condition is ARDS
📌Teen was healthy prior; no underlying conditions

bsky.app/profile/dreric…
Read 4 tweets
Eric Feigl-Ding Profile picture
Nov 13
Trump’s incoming SECRETARY OF DEFENSE who doesn’t wash his hands and doesn’t believe in germs. Image
2) Trump’s new SECDEF is also in favor of committing war crimes. businessinsider.com/pete-hegseth-a…
3) Trump’s SECDEF pick is a wild character. And loves hawking merch.
Read 4 tweets
Eric Feigl-Ding Profile picture
Nov 9
My god—Google Search for “what is a tariff” sudden spikes the DAY AFTER ELECTION DAY. 🤦🏻‍♂️ Image
2) many folks simply don’t understand what a tariff is — unless you explain it several times to them with analogies. Even then, it’s hard for many to grasp. Eg 👇
3) Ah shit… it’s now gotten worse. Why do so many people do their hw late??,
Read 6 tweets
Eric Feigl-Ding Profile picture
Nov 6
📍HARRIS IS STILL AHEAD IN PA—in terms of votes yet to be counted. She’s still +2 of what is needed to win PA, given the outstanding votes still remaining in PA cities, according to @CBSNews @NorahODonnell Image
Image
Image
Harris has enough remaining in PA Philly suburbs to still win. Image
3) folks. The NYT needle is not reliable.
Read 5 tweets
Eric Feigl-Ding Profile picture
Oct 31
Plastic cookware should not be used. Period. Especially BLACK PLASTIC cookware, that often mixes in toxic recycled electronic waste materials. DISPOSE OF ALL PLASTIC COOKWARE, especially if black colored plastic ones. Pass it on to your family.

Gift🎁🔗
theatlantic.com/health/archive…Image
2) Because optical sensors in recycling facilities can’t detect them, black-colored plastics are largely rejected from domestic-waste streams, resulting in a shortage of black base material for recycled plastic. So the demand for black plastic appears to be met “in no insignificant part” via recycled e-waste, according to Turner’s research. TV and computer casings, like the majority of the world’s plastic waste, tend to be recycled in informal waste economies with few regulations and end up remolded into consumer products, including ones, such as spatulas and slotted spoons, that come into contact with food.
3) You simply do not want flame retardants anywhere near your stir-fry. Flame retardants are typically not bound to the polymers to which they are added, making them a particular flight risk: They dislodge easily and make their way into the surrounding environment. And, indeed, another paper from 2018 found that flame retardants in black kitchen utensils readily migrate into hot cooking oil. The health concerns associated with those chemicals are well established: Some flame retardants are endocrine disruptors, which can interfere with the body’s hormonal system, and scientific literature suggests that they may be associated with a range of ailments, including thyroid disease, diabetes, and cancer. People with the highest blood levels of PBDEs, a class of flame retardants found in black plastic, had about a 300 percent increase in their risk of dying from cancer compared with people who had the lowest levels, according to a study released this year. In a separate study, published in a peer-reviewed journal this month, researchers from the advocacy group Toxic-Free Future and from Vrije Universiteit Amsterdam found that, out of all of the consumer products they tested, kitchen utensils had some of the highest levels of flame retardants.
Read 4 tweets
Eric Feigl-Ding Profile picture
Oct 29
⚠️MASK MANDATE RETURNING TO ALL NIH PATIENT CLINICS—Effective November 4, 2024, masking will be required in all patient care & waiting rooms. Furthermore, testing for COVID, flu A, flu B, and RSV will be required for all inpatients & rooming-in visitors.
cc.nih.gov/patient-servic…Image
Image
2) This means wearing a mask will be REQUIRED in all patient care areas, including waiting rooms. ➡️This change is due to an anticipated increase in COVID-19 and other respiratory virus activity in the community. 😷
3) I think people should stock up on COVID tests again. The Cheapest COVID test on the U.S. market is now as low as $1.50 with special promo code “COV20”… expiring Jan or March 2025.

store.pharmalynk.com/products/advin…Image
Read 6 tweets

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