Weekly totals of variants in all locations (by specimen date)
Week 46 47 48 49 50 51 52 01 02 03 04 05 06
NB.1.8.1 390 382 355 409 367 394 340 324 324 219 51 3
Total 2174 2069 1914 1938 1912 2009 1491 1404 1236 684 193 15
NB.1.8.1 % 18% 18% 19% 21% 19% 20% 23% 23% 26% 32% 26% 20%

Last Updated: 3rd February 2026 21:58 GMT — Local:

Growth Charts

Growth chart for NB.1.8.1

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.