Weekly totals of variants in Singapore (by specimen date)
Week 16 17 18 19 20 21 22 23
NB.1.8.1 3 15 33 56 75 66 16
XFG 2 7 16 7 14 3 2
BA.3.2 2 11 10 16 18 17 1
Total 17 48 95 103 127 106 22
NB.1.8.1 % 18% 31% 35% 54% 59% 62% 73%
XFG % 12% 15% 17% 7% 11% 3% 9%
BA.3.2 % 12% 23% 11% 16% 14% 16% 5%

Last Updated: 7th June 2026 18:58 BST — Local:

Growth Charts

Growth chart for NB.1.8.1
Growth chart for XFG
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.