Weekly totals of variants in all locations (by specimen date)
Week 47 48 49 50 51 52 01 02
XFG 1251 1048 855 641 336 99 42
NB.1.8.1 345 297 279 183 98 14 5
BA.3.2 31 62 73 57 48 13 1
Total 1788 1547 1316 959 545 143 55
XFG % 70% 68% 65% 67% 62% 69% 76%
NB.1.8.1 % 19% 19% 21% 19% 18% 10% 9%
BA.3.2 % 2% 4% 6% 6% 9% 9% 2%

Last Updated: 10th January 2026 10:28 GMT — 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.