TABLE 1.2.
Major Virus Families
| Nucleic acid | Genome size | Segments | Family | Genera | Major hosts (number of members infecting that host)a |
|---|---|---|---|---|---|
| DS DNA | 130–375 kbp | 1 | Poxviridae | 8 + 3 | Vertebrates (35 + 9T)b, insects (27), plus 15 Uc |
| 170–190 kbp | 1 | Asfariviridae | 1 | Vertebrates (1) | |
| 170–400 kbp | 1 | Iridoviridae | 3 + 2 | Vertebrates (2 + 5T), insects (6 + 11T) | |
| 120–220 kbp | 1 | Herpesviridae | 9 | Vertebrates (61 + 7T + 56U) | |
| 80–180 kbp | 1 | Baculoviridae | 2 | Insects (36 + 8T) | |
| 28–48 kbp | 1 | Adenoviridae | 4 | Vertebrates (32 + 9T) | |
| 5 kbp | 1 | Polyomaviridae | 1 | Vertebrates (12) | |
| 6.8–8.4 kbp | 1 | Papillomaviridae | 16 | Vertebrates (7 + 88T + 13U) | |
| Various | 1 | Several families | — | Bacteria (42 + 368T) | |
| SS DNA | 4–6 kbp | 1 | Parvoviridae | 5 + 4 | Vertebrates (33 + 3T), insects (6 + 18T) |
| Various | 1 | Several families | — | Bacteria (43 + 38T), plants (98 + 11T) | |
| DS RNA | 20–30 kbp | 10–12 | Reoviridae | 6 + 2 + 4 | Vertebrates (52 + 24T), insects (1 + 7T), plants (13 + 1T) |
| 5.9 kbp | 2 | Birnaviridae | 2 + 1 | Vertebrates (3), insects (1) | |
| 4.6–7.0 kbp | 1 or 2 | Three families | — | Fungi (7 + 7T), plants (30 + 15T), protozoans (14) | |
| SS (+)RNA | 28–33 kb | 1 | Coronaviridae | 2 | Vertebrates (17 + 1T) |
| 13–16 kb | 1 | Arteriviridae | 1 | Vertebrates (4) | |
| 10–13 kb | 1 | Togaviridae | 2 | Vertebrates (insect vectors)(28) | |
| 10–12 kb | 1 | Flaviviridae | 3 | Vertebrates (some insect vectors) (59 + 4T) | |
| 7–8.5 kb | 1 | Picornaviridae | 9 | Vertebrates (30 + 1T + 23U) | |
| 7–8 kb | 1 | Astroviridae | 2 | Vertebrates (9) | |
| 8 kb | 1 | Caliciviridae | 4 | Vertebrates (6 + 1T) | |
| 7.2 kb | 1 | Hepeviridae | 1 | Vertebrates (1) | |
| Various | 1 to 3 | Many families | — | Plants (496 + 84T + 5U) | |
| SS (−)RNA | 15–16 kb | 1 | Paramyxoviridae | 7 | Vertebrates (34 + 2U) |
| 19 kb | 1 | Filoviridae | 2 | Vertebrates (5) | |
| 11–16 | 1 | Rhabdoviridae | 4 + 2 | Vertebrates (23 + 25T + 40U), inVertebrates (20U), plants (15) | |
| 6 kb | 1 | Bornaviridae | 1 | Vertebrates (1) | |
| 10–15 kb | 8 | Orthomyxoviridae | 5 | Vertebrates (7) | |
| 12–23 kb | 3 | Bunyaviridae | 4 + 1 | Vertebrates and insect vectors (86 + 20T), plants (9 + 7T) | |
| 11 kb | 2 | Arenaviridae | 1 | Vertebrates (19 + 1T) | |
| SS RNA RT | 7–10 kb | dimer | Retroviridae | 7 | Vertebrates (53 + 2T) DNA Intermediate |
| DS DNA RT | 3 kb | 1 | Hepadnaviridae | 2 | Vertebrates (5 + 1T) RNA intermediate |
| 8 kb | 1 | Caulimoviridae | 6 | Plants (26 + 10T) RNA intermediate |
a
Vertebrates in red indicate humans are among the vertebrates infected. Vertebrates in blue indicate non-human hosts only; plant hosts are in green; insect hosts in yellow; bacterial hosts are black.
b
T = tentatively assigned to a particular genus.
c
U = assigned to the family, but not to any particular genus within the family.
Source: Data for this table is from Fauquet et al. (2005).
© 2008