A brief update to the focal S:N501 builds to start your Friday off right! This one includes data from 7 Jan 21.

We have about 20 new sequences each in 501Y.V1 (B.1.1.7 #b117) & 501Y.V2.

Let's take a look at the new sequences, starting with 501Y.V1

1/14

https://t.co/kT1gFsSZn0

There are 22 new non-UK sequences in 501Y.V1, including for the first time from Luxembourg (3), & additional seqs from Singapore (1), Australia (4), France (12), & Switzerland (2).

2/14
First, Luxembourg has 3 sequences in 501Y.V1 for the first time. Each represents a separate introduction.

3/14
France has 12 new sequences (orange). Many of these represent independent introductions.

Zooming in (divergence view), we can see 2 new sequences are identical (possible local transmission), & 2 differ by 2 mutations (1 each).

4/14
Australia has 4 new sequences (red and orange) which are spread across the tree, representing separate additional introductions.

5/14
Switzerland has 2 new sequences. One (marked 1st pic) is a clear separate introduction. The other (marked 2nd pic, zoomed, divergence) is from Bern & identical to an earlier sequence from Zurich ('ZH'). This could be local transmission or a common exposure.

6/14
There is 1 new sequence from Singapore (orange).

Zooming in (divergence view), we can see it is identical to 2 older sequences, which may indicate local transmission or a common exposure.

7/14
There are ~19 new non-South African sequences in 501Y.V2, including for the first time from Botswana (6), South Korea (1), & France (1), as well as additional sequences from the UK (~9).

(UK data may be affected by subsampling due to large sequence numbers.)

8/14
At least 9 new sequences from the UK are now in 501Y.V2 (UK data may be impacted by subsampling).

These are a mix of separate introductions & local transmission.

Connections to French sequences are in the next tweet...

9/14
France has 2 sequences in 501Y.V2. They cluster together, which may indicate local transmission or a common source.
They are related to seqs from England, but whether this is European transmission or exposure to common diversity in S Africa can't be distinguished clearly.

10/14
Botswana has 6 sequences in 501Y.V2. One sits apart from the others, indicating at least 2 introductions.

The other 5 cluster together, but are separated by a 1-3 mutations. This could indicate local transmission or transmission from unsampled South African diversity.

11/14
Lastly, South Korea has a sequence in 501Y.V2 for the first time.

12/14
As previously, the country plots are also updated. Lithuania is now added!

Remember: many countries are currently focusing sequencing efforts on S:N501 variants, so frequencies are often not true representations of the 501Y variants.

13/14

https://t.co/c7wlQOLRiq
Finally, we've added a new label to help identify a cluster of sequences with a S:N501*T* mutation currently circulating in Australia.

This is another independent appearance of a S:N501 (again, to T, not Y) mutation, & is not related to 20C/501Y.V2 or 20B/501Y.V1.

14/14

More from Dr Emma Hodcroft

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

More from For later read

(1/50)

#Cardano “Understanding Kamali”

#Cardano will be the underpinning of the emergence of Africa.

To grasp the full weight of the SOLUTIONS #Cardano can provide it is pertinent to read “Understanding Africa” as I will draw directly from the PROBLEMS laid out.


(2/50)

Here is a link if you have not already read


(3/50)

What I will attempt to do here, is to create an immersive world for you to be placed in to grasp the weight and size of problems from the ground level and then take a grass-roots approach at solving them using #Cardano and its technology.

(4/50)

As an investor and community member of #Cardano, this should be extremely important to you as you have a stake (pun intended) in this.

“You are paid in direct proportion to the difficulty of the problems you solve” - @elonmusk

(5/50)

In Africa, agribusiness, more than any other sector, has the potential to reduce poverty and drive economic growth. Agriculture accounts for nearly half of the continent’s gross domestic product and employs 60 percent of the labor force.

You May Also Like

प्राचीन काल में गाधि नामक एक राजा थे।उनकी सत्यवती नाम की एक पुत्री थी।राजा गाधि ने अपनी पुत्री का विवाह महर्षि भृगु के पुत्र से करवा दिया।महर्षि भृगु इस विवाह से बहुत प्रसन्न हुए और उन्होने अपनी पुत्रवधु को आशीर्वाद देकर उसे कोई भी वर मांगने को कहा।


सत्यवती ने महर्षि भृगु से अपने तथा अपनी माता के लिए पुत्र का वरदान मांगा।ये जानकर महर्षि भृगु ने यज्ञ किया और तत्पश्चात सत्यवती और उसकी माता को अलग-अलग प्रकार के दो चरू (यज्ञ के लिए पकाया हुआ अन्न) दिए और कहा कि ऋतु स्नान के बाद तुम्हारी माता पुत्र की इच्छा लेकर पीपल का आलिंगन...

...करें और तुम भी पुत्र की इच्छा लेकर गूलर वृक्ष का आलिंगन करना। आलिंगन करने के बाद चरू का सेवन करना, इससे तुम दोनो को पुत्र प्राप्ति होगी।परंतु मां बेटी के चरू आपस में बदल जाते हैं और ये महर्षि भृगु अपनी दिव्य दृष्टि से देख लेते हैं।

भृगु ऋषि सत्यवती से कहते हैं,"पुत्री तुम्हारा और तुम्हारी माता ने एक दुसरे के चरू खा लिए हैं।इस कारण तुम्हारा पुत्र ब्राह्मण होते हुए भी क्षत्रिय सा आचरण करेगा और तुम्हारी माता का पुत्र क्षत्रिय होकर भी ब्राह्मण सा आचरण करेगा।"
इस पर सत्यवती ने भृगु ऋषि से बड़ी विनती की।


सत्यवती ने कहा,"मुझे आशीर्वाद दें कि मेरा पुत्र ब्राह्मण सा ही आचरण करे।"तब महर्षि ने उसे ये आशीर्वाद दे दिया कि उसका पुत्र ब्राह्मण सा ही आचरण करेगा किन्तु उसका पौत्र क्षत्रियों सा व्यवहार करेगा। सत्यवती का एक पुत्र हुआ जिसका नाम जम्दाग्नि था जो सप्त ऋषियों में से एक हैं।