Virus-Host DB organizes data about the relationships between viruses and their hosts, represented in the form of pairs of NCBI taxonomy IDs for viruses and their hosts. Virus-Host DB covers viruses with complete genomes stored in 1) NCBI/RefSeq and 2) GenBank whose accession numbers are listed in EBI Genomes or INPHARED. The host information is collected from RefSeq, GenBank (in free text format), UniProt, ViralZone, and manually curated with additional information obtained by literature surveys.

Selected viral families
Adenoviridae Papillomaviridae Herpesviridae
Baculoviridae Poxviridae Parvoviridae
Retroviridae Reoviridae Picornaviridae
Flaviviridae Caliciviridae Coronaviridae
Bunyaviridae Orthomyxoviridae Paramyxoviridae
Annotated virusesLast Update: February 25, 2024
Viral classificationNo. of uniq tax idHost classificationNo. of uniq tax id
dsRNA33 Bacteria 0
Eukaryota33
Archaea 0
Viruses 0
Unassigned/Other0
dsDNA2860 Bacteria 2767
Eukaryota65
Archaea 18
Viruses 0
Unassigned/Other11
ssRNA44 Bacteria 0
Eukaryota44
Archaea 0
Viruses 0
Unassigned/Other0
ssDNA1921 Bacteria 223
Eukaryota1404
Archaea 5
Viruses 36
Unassigned/Other290
Retrovirus0 Bacteria 0
Eukaryota0
Archaea 0
Viruses 0
Unassigned/Other0
Satellite virus and Virophage8 Bacteria 0
Eukaryota8
Archaea 0
Viruses 4
Unassigned/Other0
Viroid3 Bacteria 0
Eukaryota3
Archaea 0
Viruses 0
Unassigned/Other0
Other8 Bacteria 1
Eukaryota1
Archaea 1
Viruses 0
Unassigned/Other2398
RefSeq
GenBank
Viral entries
(No. of sequence accessions)
35326
Source of host information (No. of evidence records)
RefSeq + GenBank UniProt Viral Zone Manual annotation Total
26631 1765 220 10461 35244