Molecular Epidemiology and Evolution of Equine Arteritis Virus

  • Udeni R. Balasuriya
  • Jodi Hedges
  • N. James Maclachlan
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 494)


EVA is an infectious disease of equids that occurs in many parts of the world and is caused by EAV (Timoney and McCollum, 1993; Glaser et al., 1997). Most EAV infections are subclinical but occasional outbreaks of disease occur that are characterised by any combination of influenza-like illness in adult horses, abortion in pregnant mares, and interstitial pneumonia in very young foals. Up to 60% of stallions infected with EAV become persistently infected carriers and shed virus continuously in semen. Persistence of EAV in the male reproductive tract is testosterone-dependent, and persistently infected stallions function as a natural reservoir that can disseminate virus to susceptible mares at breeding (Timoney and McCollum, 1993).


Persistent Infection Molecular Epidemiology Semen Sample Nasal Swab Male Reproductive Tract 
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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Udeni R. Balasuriya
    • 1
  • Jodi Hedges
    • 1
  • N. James Maclachlan
    • 1
  1. 1.Bernard and Gloria Salick Equine Viral Disease Laboratory, Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, One Shields AvenueUniversity of CaliforniaDavisUSA

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