| Weekly totals of variants in USA | ||||||||
|---|---|---|---|---|---|---|---|---|
| Week | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 |
| NB.1.8.1 | 100 | 65 | 67 | 30 | 17 | 1 | – | – |
| XFG | 1041 | 727 | 678 | 394 | 123 | 28 | 2 | – |
| XFP | – | – | – | – | – | – | – | – |
| Total | 1278 | 869 | 836 | 470 | 161 | 33 | 2 | – |
| NB.1.8.1 % | 8% | 7% | 8% | 6% | 11% | 3% | 0% | – |
| XFG % | 81% | 84% | 81% | 84% | 76% | 85% | 100% | – |
| XFP % | 0% | 0% | 0% | 0% | 0% | 0% | 0% | – |
Last Updated: 21st October 2025 16:44 BST — Local: …
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.