top of page
  • Coastal Equine

EHV v. EHM - What's the Difference?

Updated: Aug 12, 2020

Equine Herpesvirus (EHV)

  • EHV is a common virus in the horse population and has several genetic strains.

  • Common strains, EHV-1 and EHV-4, cause a mild respiratory disease.

  • In most cases, horses recover from the virus within a few weeks.

  • Vaccinations are available to prevent the respiratory disease and abortion caused by EHV-1 and EHV-4.

Equine Herpesvirus Myeloencephalopathy (EHM)

  • EHM is a neurologic disease that can develop, in rare cases, in a horse infected by EHC.

  • EHM is usually caused by the EHV-1 virus. In extremely rare cases, EHV-4 can develop into EHM.

  • There is no cure or vaccination for EHM and prognosis for horses who test positive for EHV and develop neurologic signs of EHM can be poor.

17 views0 comments

Recent Posts

See All


bottom of page