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
Italy has 6 new sequences (orange), which indicate additional independent introductions.

6/14
Netherlands has 4 new sequences (orange), indicating 1 clear additional introduction. The other new sequences cluster with older sequences, possibly indicating local transmission.

7/14
Switzerland has 3 new sequences (orange). 1 is clearly a separate introduction.
Zooming (divergence view), we can see 2 of the new sequences differ by 1 mutation, & connect to a UK sequence. More info would be needed to conclusively determine if this is local transmission.

8/14
Brazil has 2 new sequences, 1 (marked) shows a new introduction. The other connects to a previous sequence. Zooming in (divergence view) we can see this more clearly - they are identical, and this may indicate local transmission.

9/14
Hong Kong, Germany and the USA (from New York), each have 1 new sequence (orange), indicating additional introductions.

10/14
Moving on to 501Y.V2, there are 7 new non-South-African sequences in 501Y.V2, from the United Kingdom (6) and Sweden (1).

11/14

https://t.co/fOPgetG9S8
Sweden has a sequence in 501Y.V2 for the first time.

12/14
UK has 6 new sequences in 501Y.V2 (orange), including 1 from Scotland. Most indicate separate introductions, but 1 new seq links to the older 1 (blue). Zooming (divergence view), they are separated by 1 mutation. This could indicate local transmission or the same exposure.

13/14
As always, the graph of variants per country is updated (remember: as people are preferentially sequencing S:N501 samples, the proportions shown are not accurate outside of UK & Denmark!)

Additionally, the 'reduced UK' S:N501 build is updated!

14/14

https://t.co/c7wlQOLRiq

More from Dr Emma Hodcroft

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

More from World

Niger state shares borders with Zamfara, kebbi, Kaduna & Benin Republic. Terrorists from Niger republic and Burkina faso easily move money and arms across the borders of Kebbi, Zamfara and Benin R into Niger state. According to UN over 900,000 people have been displaced in B'Faso https://t.co/65YEMJhqDp


Niger, Mali and Burkina faso are weak countries populated by Shell terrorists who have now found a safe haven in the forests in Kaduna and Niger state. Birin Gwari, Mokwa forest, Nanati forests, Kanji lake areas.

No decent human resides permanently in forests.

We are facing both external and internal threats from these weak and failed countries we are surrounded with. As a senator you know that a FG police system with less than 300k officers can't actively police the landmass and borders in the North.
Form your state police now!

You and other senators should scrap the FG police system and devote the unaudited security votes and constituency allowance to policing your corridors and forests. Let the airforce bomb them and put your rangers in the forests. Issue an ultimatum for those in the forests to leave

You are all living in a dream if you think the current police structure will become efficient overnight.
Budget, Personnel, Technology, Equipment, Surveillance..It's impossible.
Form your state and community police and flush out the terrorists.

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