Equid alphaherpesvirus 9
Equine alphaherpesvirus 9 is a species of virus in the genus Varicellovirus, subfamily Alphaherpesvirinae, family Herpesviridae, and order Herpesvirales. It was first isolated from a case of epizootic encephalitis in a herd of Thomson's gazelle in 1993. Fatal encephalitis was reported from Thomson's gazelle, giraffe, and polar bear in natural infections. The virus was reported in an aborted Persian onager and a polar bear.