ARTERITIS VIRAL – Free download as Powerpoint Presentation . ppt), PDF File .pdf), Text File .txt) or view presentation slides online. Equine viral arteritis (EVA) is a contagious viral disease of equids caused by equine arteritis virus. (EAV), an RNA virus classified in the genus, Arterivirus, family. English Translation, Synonyms, Definitions and Usage Examples of Spanish Word ‘arteritis viral equina’.
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It is very important to maintain strict hygiene and disinfection of instruments and equipment to minimize the risk of transmission of the virus.
Equine Viral Arteritis: epidemiological and intervention perspectives
Moreover, in some states such as Utah, the outbreak resulted in respiratory illness, abortions, neonatal pneumonia and death of several animals. However, none of the symptoms reported the presence of reproductive or respiratory clinical signs consistent with those caused by EAV infection. According to the World Animal Health Organization-OIE, a carrier stallion has serological positive for antibodies to the virus using the virus neutralisation test or an appropriately validated enzyme-linked immunosorbent assay ELISA and also positive virus isolation from the semen Timoney, The most widely used method for diagnosis is the evaluation of neutralizing antibodies, although the presence of such antibodies does not indicate active infection, but rather that the animal has been exposed to EAV.
Based on extensive comparative studies at the genomic and antigenic level of EAV, only one serotype has been detected, usually called the Bucyrus strain McCollum, It is necessary to mention that due to EVA is an exotic disease, vaccinations are not recommended in our country yet. The most important outbreak of EVA in America occurred inwhen the disease struck many racing thoroughbred farms in Kentucky.
Pathology of maternal genital tract, placenta, and fetus in equine viral arteritis. Proceedings of the 5th Conf Equine Infec Dis; The carrier state has been identified only in the stallion, not in mares, geldings or sexually immature foals Timoney et al.
As in Latin America, in U. Vasculitis is characterized by fibrinoid necrosis of small arteries with extravasation of red blood cells and proteinaceous material.
These measures were subsequently gradually decreased, with today a greater emphasis on controlling the international trade of carrier stallions and infected semen, which have frequently been implicated in the spread of arterits virus within and between countries Timoney, b According to the World Animal Health Organization-OIE, a carrier stallion has serological positive for antibodies to the virus using the virus neutralisation test or an appropriately validated enzyme-linked immunosorbent assay ELISA and also positive virus isolation from the semen Timoney, The most frequent is the respiratory route.
Equine Respiratory Diseases, P. Alphaarterivirus equid Virus classification unranked: At times a live but congenitally infected and sick foal is born Vaala et al. Experimentally, it has become clear that abortion is primarily the result of fetal infection, other than myometritis or damage to the placenta, leading to expulsion of the fetus; in addition, there is evidence that the tissues of the aborted fetus tissues have higher viral titers compared to the mother, stressing rateritis high level of virus replication in the fetus MacLachlan et al.
Three year later, in Octoberthe requirement to diagnose EVA in native, imported horses or seminal material was established.
This outbreak led to two very important findings regarding the EVA: The carrier state in equine arteritis virus infection in the stallion with specific emphasis on the venereal mode of virus transmission. How to cite this article. In addition, vaccination has been successfully used as a tool to control the spread of the disease during an outbreak, controlling the spread of infection and the severity of the symptoms Timoney, Subsequently, a second stallion developed pyrexia, but maintained adequate fertility.
The most widely used method for diagnosis is the evaluation of neutralizing antibodies, although the presence of such antibodies does not indicate active infection, but rather aarteritis the animal has been exposed to EAV. In America, the presence of EAV has been reported in different countries of South, Central and North America, mainly in Argentina, the United States and Canada where the virus has caused substantial economic losses and is today one of the main pathogens of veterinary importance Figure 3.
Adv Virus Res ; Although through the years it has been recognized that EAV causes contagious abortion in pregnant mares Doll et arteriis.
Therefore we propose to strengthen technical scientific investigations and mainly diagnostic capacities to be prepared for early diagnosis and control, and avoid an infection that can be devastating for such a large and important industry as zootechnical exploitation of equines in our country. However, from a practical standpoint, it is difficult to distinguish between EAV strains that can cause abortion and those which do not; additionally, there are no standard techniques to classify the strains based on their abortive properties.
Clinical, virological and epidemiological features of the out break of equine viral arteritis in the Thorough bred population in Kentucky, USA.
Equine viral arteritis
There also exists some variability between the strains based on eqjina pathogenicity, some strains being capable of causing a wide range of clinical symptoms, collectively referred to as EVA in susceptible horses, whereas others produce only a slight fever Balasuriya et al.
Of these, 10 were thoroughbreds imported from the U.
Epidemiological status in America In America, the presence of EAV has been reported in different countries of South, Central and North America, mainly in Argentina, the United States and Canada where the virus has caused substantial economic losses arterifis is today one of the main pathogens of veterinary importance Figure 3.