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bluetongue |
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bluetongue an infectious, non-contagious disease of sheep and occasionally cattle, transmitted by Culicoides spp. Caused by an Orbivirus with at least 24 serotypes worldwide. Cattle are the reservoir and amplification hosts. Severe disease is restricted to fine wool and mutton breeds of sheep. Infection, but not disease, is endemic in tropical and subtropical regions. Disease occurs in epidemic and incursive areas when climatic conditions allow the expansion of vector occurrence. Currently, this is occurring in southern Europe associated with global warming. Manifest with fever, catarrhal stomatitis, rhinitis, enteritis and lameness due to a coronitis and myositis. High case fatality can occur in sheep. Congenital infections with wild or vaccine virus may result in defects in the nervous system, the type and severity depending on the stage of gestation. bluetongue virus (BTV) a member of the family Reoviridae, genus Orbivirus. Causes bluetongue in sheep and other ruminants. Within the BTV serogroup there at least 24 serotypes of BTV and considerable genetic variability How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Outbreaks of bluetongue disease, a viral disease of sheep, have been reported in Bulgaria and Sardinia, locations where the disease was previously unknown. Other reoviruses, called orbiviruses, pose a significant veterinary threat, causing an equine disease called African horse sickness and bluetongue disease in sheep and cattle. |
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