| Group IV ((+)ssRNA)|
| Everglades virus, Barmah Forest virus, Rocio viral encephalitis, Semliki Forest virus, Alphavirus|
Sagiyama virus is an arthropod borne virus recovered from mosquitoes collected during July and August 1956 and 1957 near Tokyo, Japan. Sagiyama virus is in a member of the genus Alphavirus in the family Togaviridae, possessing single positive strand RNA genome.
Sagiyama virus Wikipedia
Sagiyama virus is harmless to humans, and causes moderate symptoms in horses.