There are around a billion cases of seasonal influenza (flu) annually, including 3–5 million cases of severe illness. The WHO uses real-time tracking of influenza lineage evolution by Nextstrain to make recommendations.
Latest News
Nextstrain and Nextclade resources for Lassa virus
Posted 21 April 2026
Open‑access Nextstrain and Nextclade resources for Lassa virus that enable live phylogenetic and phylogeographic visualisation, rapid mutation detection, and robust lineage assignment from the L and S segments and the glycoprotein complex are described here!
Cellosaurus version 55 is now available
Posted 14 April 2026
Cellosaurus, the knowledge resource on cell lines, now contains information for 167186 cell lines from 904 species extracted from 29959 distinct publications. If you're working with cell lines, this is the go-to reference!
SIB Remarkable Outputs 2025
Posted 03 April 2026
Discover the seven outstanding data resources, software tools, and peer-reviewed publications which have been recognized as SIB Remarkable Outputs 2025!
New pathogens and sequences in Pathoplexus
Posted 27 March 2026
Studying dengue and yellow fever? Pathoplexus has launched support for these two viruses . It has also added over 1,500 new directly-submitted sequences across six pathogens (more)
SIB Training survey
Posted 20 March 2026
To understand your training needs, preferred learning formats, and the barriers preventing you from participating in SIB courses, please take 10 minutes to complete this survey!