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Equine Viral Arteritis - Donkey (view source)
Revision as of 11:21, 21 February 2010
, 11:21, 21 February 2010→Introduction
EVA is caused by the [[Equine Arteritis Virus (EAV)|equine arteritis virus (EAV)]], an arterivirus with only one serotype. The virus occurs worldwide and the first outbreak in a horse in the UK occurred in 1993. No clinical outbreaks have occurred since, though infections are occasionally detected. It can affect horses, donkeys, mules and possibly, zebras. To date there are no recorded naturally occurring clinical cases of EVA in donkeys (McCollum, 1995) despite a seroprevalence of 30% in some areas (Paweska, 1993).
EVA is caused by the [[Equine Arteritis Virus (EAV)|equine arteritis virus (EAV)]], an arterivirus with only one serotype. The virus occurs worldwide and the first outbreak in a horse in the UK occurred in 1993. No clinical outbreaks have occurred since, though infections are occasionally detected. It can affect horses, donkeys, mules and possibly, zebras. To date there are no recorded naturally occurring clinical cases of EVA in donkeys (McCollum, 1995) despite a seroprevalence of 30% in some areas (Paweska, 1993).
'''Transmission '''of infection can be'''via infected body fluids''', particularly by the '''respiratory route''', and to a lesser extent via contaminated '''fomites'''. '''Venereal spread''' by stallions is significant and similar in the donkey and
'''Transmission '''of infection can be''' via infected body fluids''', particularly by the '''respiratory route''', and to a lesser extent via contaminated '''fomites'''. '''Venereal spread''' by stallions is significant and similar in the donkey and
the horse. Clinically normal but persistently infected males can spread the virus during mating to susceptible sero-negative mares. This disease is accorded great significance by the UK horse industry due to the potential for abortions and consequent economic loss on stud farms.
the horse. Clinically normal but persistently infected males can spread the virus during mating to susceptible sero-negative mares. This disease is accorded great significance by the UK horse industry due to the potential for abortions and consequent economic loss on stud farms.