Weekly totals of variants in all locations (by specimen date)
Week 05 06 07 08 09 10 11 12
XFG 958 1005 805 622 421 58
NB.1.8.1 368 344 370 332 236 47 1
BA.3.2 102 103 111 84 59 22 1
Total 1578 1597 1407 1137 765 140 2
XFG % 61% 63% 57% 55% 55% 41% 0%
NB.1.8.1 % 23% 22% 26% 29% 31% 34% 50%
BA.3.2 % 6% 6% 8% 7% 8% 16% 50%

Last Updated: 17th March 2026 18:59 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.