Equid gammaherpesvirus 5 (EHV-5), also called Equine herpesvirus 5, is a species of virus in the genus Percavirus, subfamily Gammaherpesvirinae, family Herpesviridae, and order Herpesvirales.

It is thought to be the cause of a chronic lung disease of adult horses; equine multinodular pulmonary fibrosis.

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