| Family/virus | Vector | Vertebrate host | Ecology | Geographic distribution | Epidemics |
| Togaviridae | |||||
| Eastern equine encephalitis | Mosquitoes | Birds | R | Americas | Yes |
| Western equine encephalitis | Mosquitoes | Birds, rabbits | R | Americas | Yes |
| Venezuelan equine encephalitis | Mosquitoes | Rodents | R | Americas | Yes |
| Flaviviridae | |||||
| Dengue | Mosquitoes | Humans | R, S, U | Americas, Africa, Asia | |
| Japanese encephalitis | Mosquitoes | Birds | R, S | Asia | Yes |
| Murray Valley encephalitis | Mosquitoes | Birds | R | Australia | Yes |
| St. Louis encephalitis | Mosquitoes | Birds | R, S, U | Americas | Yes |
| West Nile encephalitis | Mosquitoes | Birds | R, S, U | Asia, Africa, North America, | Yes |
| Powassan | Ticks | R, S | Europe, Northern United States, Canada | No | |
| Tick-borne encephalitis | Ticks | Rodents | R | Europe, Asia | No |
| Bunyaviridae | |||||
| La Crosse encephalitis | Mosquitoes | Rodents | R, S | North America | No |
| California encephalitis | Mosquitoes | Rodents | R | North America, Europe, Asia | Yes |
| Reoviridae | |||||
| Colorado tick fever | Ticks | Rodents, small mammals | R | Western United States, Canada | No |
