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Yaneer Bar-Yam Profile picture
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4 Dec, 4 tweets, 2 min read
New Study on Mask Effectiveness:

Uninfected three meters from infected person is infected in less than five minutes with near 100% certainty.

If both wear FFP2 (like N95/KN95) masks, the risk drops to about 1 in 1000.

Efficacy at 1 hour: 99.6%

mpg.de/17916867/coron…
Original article:

pnas.org/content/118/49…
Remember this tweet when some were surprised by a 98% indicated efficacy of masks?

According to the study it is 99.6% at one hour.

Our analysis of nonlinear effects

academic.oup.com/jtm/ar

endcoronavirus.org/papers/unmaski…

ticle-abstract/28/7/taab144/6365138

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More from @yaneerbaryam

Yaneer Bar-Yam Profile picture
5 Dec
Omicron superspreading events thread

Please add more

1/
Read 4 tweets
Yaneer Bar-Yam Profile picture
1 Dec
It’s Me Again. Now I’m Called Omicron via @TheTyee

I’ve travelled the world for two years and made great connections. Change is good!

1/
 thetyee.ca/Analysis/2021/…
"You probably thought that I was finishing up. Or took a long vacation to drink mojitos. No such luck. Last year, when I invited you, my good hosts, to meet my blessed variants, I smiled broadly at your puzzlement and shock.

2/
"So here I am again. Your favorite evolutionary anarchist. Changed, and ever changing.

"And now a “variant of concern” with your new Transformer toy-like name Omicron, with, count them, 50 mutations and possibilities you cannot yet fathom.

3/
Read 6 tweets
Yaneer Bar-Yam Profile picture
30 Nov
Traveler tested positive at the airport. No known domestic transmission in Japan.

1/
Japan confirms first case of new coronavirus variant a.msn.com/01/en-us/AARhY…
"The 40 Tokyo residents identified as having close contact are being required to quarantine at facilities designated by the the capital's metropolitan government instead of their homes to ensure anti-virus measures, Governor Yuriko Koike told reporters.

2/
"Matsuno said the government will maintain strict border controls and will step up its capacity to conduct genome analyses of the new variant.

"Japan announced on Monday that it will ban all foreign visitors beginning Tuesday as an emergency precaution against the variant,..
3/
Read 5 tweets
Yaneer Bar-Yam Profile picture
30 Nov
""We're telling you to get those masks back on now," New York City Mayor Bill de Blasio said on Monday. "It's smart to do."

Omicron COVID variant was in Europe before South African scientists detected and flagged it to the world cbsnews.com/news/omicron-v… via @CBSNews
"Dutch health authorities announced on Tuesday that they found the new Omicron variant of the coronavirus in cases dating back as long as 11 days, indicating that it was already spreading in western Europe before the first cases were identified in southern Africa.
"It is not yet clear whether the people concerned [in the earlier cases] have also been to southern Africa," the RIVM said, adding that the individuals had been informed of their Omicron infections and that local health services had started contact tracing.

3/
Read 7 tweets
Yaneer Bar-Yam Profile picture
29 Nov
Bad news on omicron transmission:
What makes the report even worse:

1) The first cardiologist was infected at a conference in the UK returning last thursday.
2) The cardiologist did 7 operations and participated in two conferences in Israel before recognizing symptoms.

How many cardiologists got infected in UK
And where are bookies giving odds Omicron bypasses vaccine immunity?
Read 4 tweets
Yaneer Bar-Yam Profile picture
29 Nov
First in North America

Canada reports two cases of the Omicron variant of concern in Ontario

outbreaknewstoday.com/canada-reports…
First in all of the Americas
Point of origin is reported to be Nigeria. Unless the infections occurred in transit, this is important. Nigeria is not on the list of countries most countries have stopped travel from.

msn.com/en-us/health/m…
Read 4 tweets

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