Federico Gueli
@siamosolocani.bsky.social
600 followers 510 following 440 posts
Variant Spotter SC2 .
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siamosolocani.bsky.social
478T is very beneficial as of today on Nb.1.8.1 with 435S and LF.7 without 493E , could be a good mutation for BA.3.2.2 too probably
Reposted by Federico Gueli
ryanhisner.bsky.social
There's been some mixed results on this, but the FCS-adjacent T678 is thought by many to be O-glycosylated, i.e. to have a sugary molecule attached to it. T678I would eliminate that glycan, though what effect it would have is uncertain (as far as I know).

This is a busy region in BA.3.2. 4/6
Reposted by Federico Gueli
ryanhisner.bsky.social
@siamosolocani.bsky.social can correct me if I've forgotten any recent 478 mutations. It's apparently a very flexible residue, & this diversifying selection suggests it's on the run from antibodies.

S:339 might be the only site we've seen more variety in, but not quite at this same scale. 3/6
Reposted by Federico Gueli
ryanhisner.bsky.social
There's a new BA.3.2.2 from South Africa today. For the most part, there's been little substantial change in BA.3.2 over the past few months—mostly synonymous mutations & very little happening in spike.

But this new one has 3 spike mutations & looks quite interesting. 1/6
Reposted by Federico Gueli
ryanhisner.bsky.social
BA.3.2 continues to surprise. It's foothold in both Australia and South Africa is solid, so it's not going to disappear anytime soon. It's also not growing especially quickly or spreading rapidly internationally.

But given enough time to explore, it may do both before long. We'll see. 6/6
siamosolocani.bsky.social
First ever S:L441V lineages designated both descendants of LP.8.1 both already dying off NY.26.1 and PD.1.2.1
siamosolocani.bsky.social
Denial is always tricky, because it fails to explain the origin of a a behaviour, event, process, phenomenon.
It fails to give causes and effects.
So human, so old, so past.
Reposted by Federico Gueli
mikehoney.bsky.social
Huge thanks to all the dedicated variant hunters who persevere with their crucial work away from the limelight, especially to Federico Gueli for his tips on new lineages, eg
bsky.app/profile/siam...
🧵
siamosolocani.bsky.social
Quick Sars cov2 variant update.
XFG.17.2.1 ( 219S 679R) is the fastest then there PE.1.4/PE.1.7 but still an Oceania only lineage.
After them some new designations are to watch XFG.10.4 first XFG designated with 435S
PQ.2.8.1 has S:H445P.
siamosolocani.bsky.social
a bunch of new XFG designations spanning from 845S to 679R and 704L. B ut the most interesting one is PL.6 a LF.7.1.10 (445P) that got 478T and S:T500A, becoming the ifrst lineage with S:T500A to get a designation
siamosolocani.bsky.social
Quick Sars cov2 variant update.
XFG.17.2.1 ( 219S 679R) is the fastest then there PE.1.4/PE.1.7 but still an Oceania only lineage.
After them some new designations are to watch XFG.10.4 first XFG designated with 435S
PQ.2.8.1 has S:H445P.
siamosolocani.bsky.social
i would say tha on XFG backbone 679R is the most convergent beneficial mutation right now
Reposted by Federico Gueli
josetteschoenma.bsky.social
After 3 months, South Africa has uploaded another BA.3.2.2.

It has 3 mutations in common with the Australian samples, which we haven't seen outside of Australia before. T1195C, C2592T and T6856C. So, it probably migrated after it gained those.

It gained some extra mutations after that.
Reposted by Federico Gueli
mikehoney.bsky.social
Here's the latest variant picture with a global scope, to late September.

XFG.* "Stratus" was higher at 73%.

NB.1.8.1 "Nimbus" fell to 18%.

#COVID19 #SARSCoV2 #Global #NB_1_8_1 #Nimbus #XFG #Stratus
🧵
Reposted by Federico Gueli
mikehoney.bsky.social
The trickle of BA.3.2.2 samples from Western Australia has continued.

While the frequencies of this variant are still quite low, it’s ongoing spread (likely to many thousands of infections by now) gives it every opportunity to acquire the mutations it needs to succeed.

#COVID19 #Australia
🧵
siamosolocani.bsky.social
Quick Sars cov2 variant update.
XFG.17.2.1 ( 219S 679R) is the fastest then there PE.1.4/PE.1.7 but still an Oceania only lineage.
After them some new designations are to watch XFG.10.4 first XFG designated with 435S
PQ.2.8.1 has S:H445P.
Reposted by Federico Gueli
ryanhisner.bsky.social
Attenuation of the SARS-2 furin-cleavage site (FCS) continues apace. It's beginning to look as if some form of FCS-weakening mutation might well become fixed in the near future. Collectively, they are at ~12% globally—a totally unprecedented level—& rising quickly. 1/4
Reposted by Federico Gueli
mitivigliero.bsky.social
CVD

Caso Almasri, no della Camera al processo per Nordio, Piantedosi e Mantovano
Reposted by Federico Gueli
Reposted by Federico Gueli
otafuku3.bsky.social
@doropfan.bsky.social

筆者欄すごい。HisnerさんやGueliさんも。
siamosolocani.bsky.social
i think the wave is gone quite globally, probably still up in Indonesia, Western Europe, central and Southern South America
Reposted by Federico Gueli
jpweiland.bsky.social
Both emergency dept and wastewater data suggest a rapid decline in prevalence after a relatively modest summer peak. The lull in evolution continues... with no new fast variants close behind XFG.

That being said, we're still watching BA.3.2*
Reposted by Federico Gueli
who.int
WHO @who.int · 10d
October is Breast Cancer Awareness Month

#BreastCancer is the most common cancer among women globally and represents approximately a quarter of all cancers that occur in women every year.
Breast cancer is highly curable if detected in its early stages and adequate treatment is provided.
Pink background with bold text saying 'Let's make breast cancer history' with 'breast cancer' crossed out, World Health Organization logo in corner.
siamosolocani.bsky.social
with the last upload BA.3.2.2 represents 20% of samples collected in September in Western Australia. and 40% of the most recent ones. the tree shows no cluster involved so it is circulation
nextstrain.org/fetch/genome...

Caveat Oceania and Australia have their own epi dynamics