Weekly totals of variants in United Kingdom (by specimen date)
Week 08 09 10 11 12 13 14 15
NB.1.8.1 1
XFG 4 3 1 2
BA.3.2 10 8 2 2 2
Total 15 12 3 5 2
NB.1.8.1 % 0% 0% 0% 20% 0%
XFG % 27% 25% 33% 40% 0%
BA.3.2 % 67% 67% 67% 40% 100%

Last Updated: 7th April 2026 12:58 BST — Local:

Growth Charts

Growth chart for NB.1.8.1
Growth chart for XFG
Growth chart for BA.3.2

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.