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.
A new error correction version of the 2024 ICTV taxonomy is now available online at https://ictv.global/taxonomy. This new version of Master Species List #40v2 is available for download as an Excel Spreadsheet.
The ICTV has published in the Journal of General Virology, summaries of all taxonomic changes that comprise the current (2024) release of the virus taxonomy. These publications, one per ICTV Subcommittee, provide a searchable and citable source of all new and revised virus taxa that were approved by the Executive Committee in the Summer and Fall of 2024 and ratified by the ICTV membership in February, 2025. The updated taxonomy was released as version 40 of the Master Species List.
Information on virus properties, the etymology of taxon names, and virion diagrams have all been updated to coincide with the new release of the virus taxonomy (MSL40).
Diagrams of virion morphology arranged by host and genome type at the family level provide an overview of the diversity of known forms. These diagrams are taken or adapted from the copyrighted ViralZone image library (ViralZone, SIB, Swiss Institute of Bioinformatics, https://viralzone.expasy.org)
This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.
Edited by: Luisa Rubino
Posted: March 2025
The family Tonesaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Tonesaviridae). The family Tonesaviridae was established in 2025 (Master Species List #40).
This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.
Edited by: Luisa Rubino
Posted: March 2025
The family Tomosaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Tomosaviridae). The family Tomosaviridae was established in 2025 (Master Species List #40).
This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.
Edited by: Luisa Rubino
Posted: March 2025
The family Pamosaviridae includes ssRNA(+) satellite viruses of plants (Table 1 Pamosaviridae). The family Pamosaviridae was established in 2025 (Master Species List #40).
This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.
Edited by: Arvind Varsani
Posted: November 2024, March 2025
