Genus: Alphaarterivirus

Genus: Alphaarterivirus

Distinguishing features

Members of this genus infect horses or donkeys. Infections range from asymptomatic to severe. The equine arteritis virus genome is the shortest in the family.


See discussion under family description

Genome organization and replication

See discussion under family description.


See discussion under family description.

Derivation of names

Species Alphaarterivirus equid: from the genus name and equid, horses being the host of viruses in this genus.

Species demarcation criteria

There is only one species in the genus. See “Subfamily, genus and species demarcation criteria” section on the family for species demarcation criteria which are universal for all subfamilies.

Member species

Exemplar isolate of the species
SpeciesVirus nameIsolateAccession numberRefSeq numberAvailable sequenceVirus Abbrev.
Alphaarterivirus equidequine arteritis virusBucyrusX53459NC_002532Complete genomeEAV

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.