Weekly totals of variants in United Kingdom
Week 38 39 40 41 42 43 44 45
XFG 389 346 399 330 221 74
NB.1.8.1 93 74 73 49 23 15
Total 528 467 499 413 263 94
XFG % 74% 74% 80% 80% 84% 79%
NB.1.8.1 % 18% 16% 15% 12% 9% 16%

Last Updated: 4th November 2025 21:51 GMT — Local:

Acknowledgements

We gratefully acknowledge GISAID and the many data contributors around the world for sharing SARS-CoV-2 sequences.

This analysis makes use of the Nextclade CLI.
Aksamentov, I., Roemer, C., Hodcroft, E. B., & Neher, R. A., (2021). Nextclade: clade assignment, mutation calling and quality control for viral genomes. Journal of Open Source Software, 6(67), 3773, https://doi.org/10.21105/joss.03773

Special thanks to Josette Schoenmakers ( @josetteschoenma.bsky.social on BlueSky @JosetteSchoenma on Twitter) for the table concepts.