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Eric Feigl-Ding Profile picture
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17 Feb, 4 tweets, 2 min read
There are a TON of fake N95 and KN95 masks on the internet. You need to learn how to spot. See if reviews seem authentic or not. See if weird listing characters. Buy from manufacturer or from ⁦@projectn95⁩ that verifies all sources. #COVID19 #MaskUp nytimes.com/2021/02/17/tec…
2) Either double mask (at least 1 surgical mask or better), or switch to premium mask. There is just a lot of fakes to beware of.
3) There are fewer fake surgical masks. But double masking need optimally for surgical masks + another mask.
4) Even many states have been duped by fake N95 masks. nytimes.com/2021/02/10/us/…

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More from @DrEricDing

Eric Feigl-Ding Profile picture
19 Feb
📍Pardon my vent about insufficient ventilation / air exchange & school policy. Air exchange (via fresh air or disinfection) is really important for reducing #COVID19 transmission—we should aim for 5-6 air exchanges per hour. Achieving 5-6 is harder, but should we give up? No!🧵 Image
2) President Kennedy once said, we choose to goto the moon 🌙 not because it is easy, but because they are hard—and important. Some think asking for sufficient school ventilation is like asking schools to goto the moon. No, not true! It’s possible. We can do it.
3) First there are ways to ventilate without HEPA filters or full windows. You can even with 1 door. 2 doors better. Here is how to ventilate your school classrooms if unable to open window. #COVID19
Read 25 tweets
Eric Feigl-Ding Profile picture
19 Feb
I’ve been very worried about Austria 🇦🇹 #B1351 outbreak — the largest pocket of B1351 outside of South Africa 🇿🇦.

If you can read German, my interview with @DiePressecom maybe of interest. #COVID19 #COVID19at
diepresse.com/5940011/der-fo…
2) Earlier this week... outbreak of an unknown strain in Lower Austria.
3) Earlier last week, Austria’s #B1351 outbreak cluster thread 🧵...
Read 5 tweets
Eric Feigl-Ding Profile picture
19 Feb
Outbreak of 69 #COVID19 cases in 2 schools, plus 20 at daycare centers in one Danish city—all #B117. “Something going on with the infection of [🇬🇧 variant] #B117 among children that we have not seen with the old coronavirus” says an epidemiologist. 🧵
cphpost.dk/?p=122479 Image
2) Two schools and eight daycare institutions in the central Jutland city of Kolding will remain closed until Friday following coronavirus outbreaks that experts claim underline the devastating potential of the British variant of COVID-19.
3) Speaking to DR, Viggo Andreasen, an professor at Roskilde University who is swiftly becoming favorite 🇩🇰 epidemiologist, questions whether there is “something going on with the infection of #B117 among children that we have not seen with the old coronavirus”.
Read 13 tweets
Eric Feigl-Ding Profile picture
19 Feb
BREAKING—new #COVID19 vaccine efficacy study from Israel concludes that Pfizer/BioNTech's jab is up to 85% effective after the first dose after 15 days to day 28—and even 75% including asymptomatic cases—meaning it stops infections by 75%! Huge. 🧵
news.sky.com/story/covid-19… Image
2) The research, conducted by the Sheba Medical Centre, the country's largest hospital, has been published in the Lancet medical journal.

The hospital assessed the effectiveness of the first dose of the Pfizer/BioNTech vaccine among 7,000 of its healthcare employees.
3) Professor Eyal Leshem, an infectious disease expert and director of Sheba's Institute for Travel and Tropical Medicine, told Sky News: "This is first real-world evidence of effectiveness that shows up after the first dose of the vaccine.” 👀
Read 14 tweets
Eric Feigl-Ding Profile picture
19 Feb
Sudden Kindergarten outbreak—a once small #COVID19 outbreak in an Austrian🇦🇹 kindergarten exploded from 10 cases Monday to suddenly *32 cases* by Wed—20 cases in kids, 12 adults & caregivers.

(Article in German—translation below). HT @hiems_mollis.
noen.at/melk/coronavir… Image
2) “some caregivers complained of symptoms on Saturday. They were then tested positive for SARS-CoV-2 on Saturday, despite negative rapid tests on Friday. Already on Sunday, the parents of the 75 kindergarten children were informed via the kindergarten app "KidsFox".
3) “Since then, all children and caregivers have been quarantined, the kindergarten and, for safety reasons, the afternoon care KiLo, are closed until further notice.”
Read 12 tweets
Eric Feigl-Ding Profile picture
18 Feb
So... @GovRonDeSantis misled the public, again. @RonDeSantisFL’s “Florida is 34th” claim excludes teens over 14 year old. When included, Florida pediatric cases is 9th. #COVID19

We epidemiologists just want to face palm daily.
2) this was how @GovRonDeSantis cheated the numbers. Image
3) after you properly add age 15-17, Florida pediatric #COVID19 cases jump to 9th (from the misleading 34th). Image
Read 6 tweets

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