The International Committee on Taxonomy of Viruses
(ICTV) Taxon Identifier is the Virus Code used throughout the
ICTV database (ICTVdb). The ICTVdb id is the appropriate
identifier used by the International Committee on Taxonomy of Viruses
Resource. Reference: Virus Taxonomy, Academic Press (1999).
ISBN:0123702003.
http://www.ncbi.nlm.nih.gov/ICTVdb/