New taxonomy proposals for 2026 can now be submitted. Templates for submitting proposals are available from https://ictv.global/taxonomy/templates. These 2026 templates MUST be used for all submissions. Please download all three files and read the Help file for detailed information on the submission process.
The deadline for proposal submission to Subcommittee Chairs is September 15, 2026.
The new, 2025 ICTV taxonomy is now available through our taxonomy browser at https://ictv.global/taxonomy. This new version of Master Species List #41 is also available for download as an Excel Spreadsheet.
This MSL is also archived on Zenodo with the DOI: 10.5281/zenodo.19154110
A new version of the Virus Metadata Resource (VMR) spreadsheet (VMR_MSL41.v1.20260320.xlsx) has been released that updates the virus exemplar records for to coincide with the release of MSL41, the 2025-2026 taxonomy and Master Species List. This version, released on March 20, 2026, can be downloaded from https://ictv.global/vmr/current.
The VMR has also been archived on Zenodo with the DOI: 10.5281/zenodo.19154144
The code and data that drives much of the ICTV web site, database, and downloadable spreadsheets can be found in our public GitHub repository :
https://github.com/ICTV-Virus-Knowledgebase
Available repositories include:
The code and data that drives much of the ICTV web site, database, and downloadable spreadsheets have been assigned a DOI by and are available from our Zenodo Community, International Committee on Taxonomy of Viruses (ICTV):
https://zenodo.org/communities/ictv/
Available repositories include:
Apoorva Prabhu and Christian Rinke
The citation for this ICTV Report chapter is the summary to be published as Prabhu, A and Rinke, C. (2026) ICTV Virus Taxonomy Profile: Satyavativiridae 2026, Journal of General Virology, (in press)
Corresponding author: Apoorva Prabhu ([email protected])
Edited by: Mart Krupovic and Evelien Adriaenssens
Posted: February 2026
Apoorva Prabhu and Christian Rinke
The citation for this ICTV Report chapter is the summary to be published as
Prabhu, A and Rinke, C. (2026) ICTV Virus Taxonomy Profile: Krittikaviridae 2026, Journal of General Virology, (in press)
Corresponding author: Apoorva Prabhu ([email protected])
Edited by: Mart Krupovic and Evelien Adriaenssens
Posted: February 2026
Changes to virus taxonomy, the international code of virus classification and nomenclature, and the ICTV statutes ratified by the International Committee on Taxonomy of Viruses (2025)
Archives of Virology. 171, 23 (2026). https://link.springer.com/article/10.1007/s00705-025-06485-1
Black EJ, Powell CS, Dempsey DM, Hendrickson RC, Mims LR, Lefkowitz EJ. Virus taxonomy: the database of the International Committee on Taxonomy of Viruses. Nucleic Acids Res. 2025 Nov 26:gkaf1159. doi: 10.1093/nar/gkaf1159. Epub ahead of print. PMID: 41296552.
Abstract:
TaxaBLAST will search a database composed of all ICTV species exemplar genomic nucleotide sequences for exemplars most similar to your chosen query sequence. The BLAST database used for the search is derived from the most recent VMR release. The results will provide an indication of how similar your virus sequence is to the sequences of other viruses that are representative of the virus isolates classified into a particular species.
