Weekly totals of variants in all locations (by specimen date)
Week 11 12 13 14 15 16 17 18
XFG 606 447 316 143 71 3
NB.1.8.1 330 237 215 129 62 3
BA.3.2 118 165 145 92 35 7 5
Total 1177 926 750 418 193 13 5
XFG % 51% 48% 42% 34% 37% 23% 0%
NB.1.8.1 % 28% 26% 29% 31% 32% 23% 0%
BA.3.2 % 10% 18% 19% 22% 18% 54% 100%

Last Updated: 28th April 2026 12:58 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.