Weekly totals of variants in all locations (by specimen date)
Week 31 32 33 34 35 36 37 38
XFG 96 115 70 63 30 15 31
NB.1.8.1 160 114 88 80 77 9 5
BA.3.2 21 25 9 9 4 1
Total 363 306 206 196 127 61 58
XFG % 26% 38% 34% 32% 24% 25% 53%
NB.1.8.1 % 44% 37% 43% 41% 61% 15% 9%
BA.3.2 % 6% 8% 4% 5% 3% 2% 0%

Last Updated: 19th September 2026 18:58 BST — Local:

Growth Charts

Growth chart for XFG
Growth chart for NB.1.8.1
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.