Table 1.
Viruses with the highest number of sequences in GenBank as of October 10, 2019
| species | #seqs | family |
| HIV-1 | 850,115 | Retroviridae |
| Influenza A virus | 684,026 | Orthomyxoviridae |
| Hepacivirus C | 244,533 | Flaviviridae |
| Hepatitis B virus | 114,306 | Hepadnaviridae |
| Influenza B virus | 100,373 | Orthomyxoviridae |
| Rotavirus A | 73,375 | Reoviridae |
| SIV | 44,374 | Retroviridae |
| Norovirus (Norwalk virus) | 40,925 | Caliciviridae |
| Enterovirus A | 31,478 | Picornaviridae |
| PRRSV | 29,081 | Arteriviridae |
| Dengue virus | 28,564 | Flaviviridae |
| Human orthopneumovirus | 24,384 | Pneumoviridae |
| Enterovirus B | 23,865 | Picornaviridae |
| Rabies lyssavirus | 23,771 | Rhabdoviridae |
| West Nile virus | 21,563 | Flaviviridae |
| Measles morbillivirus | 17,233 | Paramyxoviridae |
The number of sequences for the segmented viruses Influenza and Rotavirus are the sums over all their segments