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Bluetongue disease (BT) has spread after the first reported outbreak more than 100 years ago to nearly all the tropical and temperate regions worldwide in a geographic band between the latitudes 40°N and 35°S. Bluetongue virus (BT) is transmitted by biting midges of the genus Culicoides to susceptible ruminants like sheep, cattle, goats, and wild ruminants. Probably due to the global warming the dispersal...
In 2011 a new disease occurred in dairy cattle in the border region between the Netherlands and Germany, indicated by fever, reduction in milk yield and in some cases diarrhoea. The German Federal Research Institute for Animal Health detected a new orthobunya virus in blood samples of cows with fever, and named the virus for the localization of the infected cows, Schmallenberg virus. In the lambing...
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