On Oct 1, 2025, GISAID informed us that they had ended updates to the flat file of SARS-CoV-2 genomic sequences and associated metadata that we had used to update Nextstrain analyses since Feb 2020. GISAID's stated rationale was that their "resources are limited". 1/5

Nextstrain is happy to announce the availability of new resources for mumps, as described in our recent blog post. We welcome any feedback on these new resources! nextstrain.org/blog/2025-09...

Nextstrain is happy to announce the availability of a Rubella dataset — please see our new blog post for details. We welcome feedback from Rubella researchers on these new resources!

The Nextstrain team has updated our core pathogen workflows to be compatible with Snakemake v8 or higher and has updated the Nextstrain runtimes to include Snakemake v9. Please see our new blog post for more details:

Happy Friday! We've got a new blog post all about a new feature that was recently added to the Nextstrain CLI: `nextstrain run` This is a foundational component for a new, easier way to re-use Nextstrain workflows, take a look! nextstrain.org/blog/2025-06...

Fantastic training by @aphl.org and @unmc.bsky.social (Dr. Shaun Cross) with Uganda CPHL on @nextstrain.org data viz for #mpox & #Ebola Sudan virus. The workshop brought together lab, epi, and IT staff—and by the end, they were building phylogenetic trees for other pathogens too! 🧬🌍 #GenomicEpi

We are happy to announce a new blog post at nextstrain.org, highlighting some recently-added resources for rabies, Lassa fever, and yellow fever virus: nextstrain.org/blog/2025-02... We'd love to hear feedback from any subject matter experts with experience with any of those viruses!

We have been aware of an issue with the 1Password browser extension interfering with Auspice views on nextstrain.org and auspice.us. Today, we released a workaround while the 1Password team continues to investigate. More information on our blog: nextstrain.org/blog/2024-12...

We are pleased to announce the availability of the human metapneumovirus (hMPV) phylogenetic analysis on Nextstrain and its corresponding Nextclade dataset. Read more on our blog: nextstrain.org/blog/2025-01...