2/16
The focal S:N501 build has been updated with data from 15 Jan, & includes 164 non-UK, non-South African sequences in 501Y.V1 (B.1.1.7 #b117) & 501Y.V2.
The S:E484 build has also been updated. Includes 501Y.V3 & 20B/S.484K (predominantly in Brazil).
1/16
https://t.co/3bdttjKVl4
2/16
3/16
4/16
5/16
6/16
7/16
8/16
Norway has 1 new sequence (orange). Though hard to see in the picture, it is a separate introduction & not connected to older sequences.
9/16
The USA has 1 new sequence, from New Mexico (orange). It is 1 mutation away from older sequences - this could be local transmission or exposure to a common source (pic 2 & 3).
10/16
11/16
12/16
It is similar to sequences from England and France, which may onward transmission in Europe or a common source outside of Europe.
13/16
14/16
https://t.co/HpPeemTCkW
15/16
https://t.co/c7wlQOLRiq
More from Dr Emma Hodcroft
🎉Happy New Year!🎉
To kick off 2021, here's an update on:
- S:N501 variants (501Y.V1/V2) with data from 31 Dec 2020
- 69/70del variants
- 20A.EU1 variant (most prevalent variant in Europe)
(Here are some fireworks that look a bit like phylogenies! 🎆)
1/23
The latest sequences from 31 Dec show new sequences in the S:N501Y.V1 variant (originating from SE England) from Netherlands, Denmark, Australia, Italy, Canada, the USA, Germany, Switzerland, & India.
2/23
S:N501 link
https://t.co/TfHfPgBEBS
Image link
https://t.co/3aCKv1pAcI
Canada, Germany, & Switzerland all have sequences that fall in 501Y.V1 for the first time, scattered across the tree.
3/23
The USA also has its first 2 sequences that fall in 501Y.V1, from Colorado & California. India also had its first 3 sequences, also from different regions.
In both cases, the sequences are not connected, indicating separate introductions.
4/23
In countries with previous sequences:
6 new sequences from Netherlands, in orange/yellow (green are older).
1 is clearly separate - zooming in (& in divergence view, coloured by country) it is harder to determine the relationship between the others.
5/23
To kick off 2021, here's an update on:
- S:N501 variants (501Y.V1/V2) with data from 31 Dec 2020
- 69/70del variants
- 20A.EU1 variant (most prevalent variant in Europe)
(Here are some fireworks that look a bit like phylogenies! 🎆)
1/23
The latest sequences from 31 Dec show new sequences in the S:N501Y.V1 variant (originating from SE England) from Netherlands, Denmark, Australia, Italy, Canada, the USA, Germany, Switzerland, & India.
2/23
S:N501 link
https://t.co/TfHfPgBEBS
Image link
https://t.co/3aCKv1pAcI
Canada, Germany, & Switzerland all have sequences that fall in 501Y.V1 for the first time, scattered across the tree.
3/23
The USA also has its first 2 sequences that fall in 501Y.V1, from Colorado & California. India also had its first 3 sequences, also from different regions.
In both cases, the sequences are not connected, indicating separate introductions.
4/23
In countries with previous sequences:
6 new sequences from Netherlands, in orange/yellow (green are older).
1 is clearly separate - zooming in (& in divergence view, coloured by country) it is harder to determine the relationship between the others.
5/23
Each day brings new challenges, but here's an update to the dedicated S.N501 build, using data from 6 Jan 2021 to keep you going.
There are 42 new non-UK sequences in 501Y.V1 (B.1.1.7) & 7 new non-South-African sequences in 501Y.V2.
1/14
https://t.co/kT1gFsSZn0
There are 42 new non-UK sequences in 501Y.V1 from the Netherlands, Italy, Hong Kong, Finland, Sweden, Germany, USA, Switzerland, Brazil, and the first sequence from 501Y.V1 in Oman.
https://t.co/XA8VR8HiEq
2/14
Oman has their first sequence which falls into 501Y.V1:
3/14
Finland has 12 new sequences (orange), which mostly represent separate introductions. Zooming in (divergence view), we can see 3 of the new sequences are identical (red), which may indicate the cases are connected.
4/14
Sweden has 8 new sequences (orange), which indicate separate introductions.
5/14
There are 42 new non-UK sequences in 501Y.V1 (B.1.1.7) & 7 new non-South-African sequences in 501Y.V2.
1/14
https://t.co/kT1gFsSZn0
There are 42 new non-UK sequences in 501Y.V1 from the Netherlands, Italy, Hong Kong, Finland, Sweden, Germany, USA, Switzerland, Brazil, and the first sequence from 501Y.V1 in Oman.
https://t.co/XA8VR8HiEq
2/14
Oman has their first sequence which falls into 501Y.V1:
3/14
Finland has 12 new sequences (orange), which mostly represent separate introductions. Zooming in (divergence view), we can see 3 of the new sequences are identical (red), which may indicate the cases are connected.
4/14
Sweden has 8 new sequences (orange), which indicate separate introductions.
5/14
Lots of tweets about this today!
Let's see what we can see in the focal S:E484 build!
Phylogenetics (what I do - making 'family trees' from virus genetics) can be very informative to see how different variants are spreading, and how cases
There are two variants circulating predominantly in Brazil:
- 20B/S.484K seems to be older & more widespread. It has (among others) a mutation at position 484
- 20J/501Y.V3 is smaller & detected recently. It has mutations at 501 *and* 484.
2/10
https://t.co/Cw5u2kuATa
The variant predominantly in the UK (501Y.V1 / B.1.1.7) and the variant predominantly in South Africa (501Y.V2) also both have 501. 501Y.V2 *also* has the 484K mutation.
Why are there concerns about these mutations? You can read more at https://t.co/wVE7ubYBoy!
3/10
The view below is from an analysis focusing on sequences with a mutation at 484. It shows all the samples in the 2 variants (20B/S.484K & 20J/501Y.V3) & how they're related. More closely related = closer together (very, very roughly).
4/10
We can colour these samples by region to see where they're from. As we expect - most are in Brazil! A few are in Argentina (also red).
5/10
https://t.co/Cw5u2kuATa
Let's see what we can see in the focal S:E484 build!
Phylogenetics (what I do - making 'family trees' from virus genetics) can be very informative to see how different variants are spreading, and how cases
There are two variants circulating predominantly in Brazil:
- 20B/S.484K seems to be older & more widespread. It has (among others) a mutation at position 484
- 20J/501Y.V3 is smaller & detected recently. It has mutations at 501 *and* 484.
2/10
https://t.co/Cw5u2kuATa
The variant predominantly in the UK (501Y.V1 / B.1.1.7) and the variant predominantly in South Africa (501Y.V2) also both have 501. 501Y.V2 *also* has the 484K mutation.
Why are there concerns about these mutations? You can read more at https://t.co/wVE7ubYBoy!
3/10
The view below is from an analysis focusing on sequences with a mutation at 484. It shows all the samples in the 2 variants (20B/S.484K & 20J/501Y.V3) & how they're related. More closely related = closer together (very, very roughly).
4/10
We can colour these samples by region to see where they're from. As we expect - most are in Brazil! A few are in Argentina (also red).
5/10
https://t.co/Cw5u2kuATa
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🌿𝑻𝒉𝒆 𝒔𝒕𝒐𝒓𝒚 𝒐𝒇 𝒂 𝑺𝒕𝒂𝒓 : 𝑫𝒉𝒓𝒖𝒗𝒂 & 𝑽𝒊𝒔𝒉𝒏𝒖
Once upon a time there was a Raja named Uttānapāda born of Svayambhuva Manu,1st man on earth.He had 2 beautiful wives - Suniti & Suruchi & two sons were born of them Dhruva & Uttama respectively.
#talesofkrishna https://t.co/E85MTPkF9W
Now Suniti was the daughter of a tribal chief while Suruchi was the daughter of a rich king. Hence Suruchi was always favored the most by Raja while Suniti was ignored. But while Suniti was gentle & kind hearted by nature Suruchi was venomous inside.
#KrishnaLeela
The story is of a time when ideally the eldest son of the king becomes the heir to the throne. Hence the sinhasan of the Raja belonged to Dhruva.This is why Suruchi who was the 2nd wife nourished poison in her heart for Dhruva as she knew her son will never get the throne.
One day when Dhruva was just 5 years old he went on to sit on his father's lap. Suruchi, the jealous queen, got enraged and shoved him away from Raja as she never wanted Raja to shower Dhruva with his fatherly affection.
Dhruva protested questioning his step mother "why can't i sit on my own father's lap?" A furious Suruchi berated him saying "only God can allow him that privilege. Go ask him"
Once upon a time there was a Raja named Uttānapāda born of Svayambhuva Manu,1st man on earth.He had 2 beautiful wives - Suniti & Suruchi & two sons were born of them Dhruva & Uttama respectively.
#talesofkrishna https://t.co/E85MTPkF9W
Prabhu says i reside in the heart of my bhakt.
— Right Singh (@rightwingchora) December 21, 2020
Guess the event. pic.twitter.com/yFUmbfe5KL
Now Suniti was the daughter of a tribal chief while Suruchi was the daughter of a rich king. Hence Suruchi was always favored the most by Raja while Suniti was ignored. But while Suniti was gentle & kind hearted by nature Suruchi was venomous inside.
#KrishnaLeela
The story is of a time when ideally the eldest son of the king becomes the heir to the throne. Hence the sinhasan of the Raja belonged to Dhruva.This is why Suruchi who was the 2nd wife nourished poison in her heart for Dhruva as she knew her son will never get the throne.
One day when Dhruva was just 5 years old he went on to sit on his father's lap. Suruchi, the jealous queen, got enraged and shoved him away from Raja as she never wanted Raja to shower Dhruva with his fatherly affection.
Dhruva protested questioning his step mother "why can't i sit on my own father's lap?" A furious Suruchi berated him saying "only God can allow him that privilege. Go ask him"
