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Equid alphaherpesvirus 1
| Varicellovirus equidalpha1 | |
|---|---|
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Duplodnaviria |
| Kingdom: | Heunggongvirae |
| Phylum: | Peploviricota |
| Class: | Herviviricetes |
| Order: | Herpesvirales |
| Family: | Orthoherpesviridae |
| Genus: | Varicellovirus |
| Species: | Varicellovirus equidalpha1
|
| Synonyms[1] | |
| |
Equid alphaherpesvirus 1, also called Equine herpesvirus 1 (EHV-1), is a virus of the family Herpesviridae that causes abortion, respiratory disease and occasionally neonatal mortality in horses. Initial spread of EHV-1 by a newly introduced horse through direct and indirect contact can lead to abortion and perinatal infection in up to 70 percent of a previously unexposed herd.[2] Abortion usually occurs in the last four months of gestation, two to four weeks after infection of the mare.[3] Perinatal (around the time of birth) infection can lead to pneumonia and death. Encephalitis can occur in affected animals, leading to ataxia, paralysis, and death. There is a vaccine available (ATCvet code QI05AA11 (WHO)), however its efficacy is questionable.[citation needed] The virus varies in severity from sub-clinical to very severe.[4] Most horses have been infected with EHV-1, but the virus can become latent and persist without ever causing signs of infection.[5] In 2006, an outbreak of EHV-1 among stables in Florida resulted in the institution of quarantine measures.[6] The outbreak was determined to have originated in horses imported from Europe via New York, before being shipped to Florida.[7]
- ^ "History of the taxon: Species: Varicellovirus equidalpha1 (2023 Release, MSL #39)". ictv.global. International Committee on Taxonomy of Viruses. Retrieved 29 January 2025.
- ^ Fenner, Frank J.; Gibbs, E. Paul J.; Murphy, Frederick A.; Rott, Rudolph; Studdert, Michael J.; White, David O. (1993). Veterinary Virology (2nd ed.). Academic Press, Inc. ISBN 978-0-12-253056-2.
- ^ Carter, G.R.; Flores, E.F.; Wise, D.J. (2006). "Herpesviridae". A Concise Review of Veterinary Virology. Retrieved 2006-06-08.
- ^ Cite error: The named reference
EquinePracticewas invoked but never defined (see the help page). - ^ Cite error: The named reference
APHISwas invoked but never defined (see the help page). - ^ "Equine Herpes Virus type1 Status Report – Florida". Florida Department of Agriculture and Consumer Services. Archived from the original on 2007-01-06. Retrieved 2007-01-05.
- ^ "Florida Department Of Agriculture And Consumer Services Continues Investigation Into Horse Virus Outbreak". Florida Department of Agriculture and Consumer Services. Archived from the original on 2010-12-01. Retrieved 2010-12-27.
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