Number of viruses (Number of unique viral taxonomy identifiers)
Virus-Host DB provides a collection of viruses and their host information. The above graphs show the number of viruses with host information in different databases, including Virus-Host DB, RefSeq Viral, UniProt, and NCBI taxonomy.
Number of viral sequences (Number of RefSeq+GenBank viral entries)
The above two graphs show the number of the RefSeq+GenBank Viral genome entries (Note: multiple genome segments for a single viral genome are recorded in separate entries in RefSeq, GenBank).