African horse sicknessplay
Medical Definition of African horse sickness
: an often fatal disease especially of horses, donkeys, and mules that is caused by a reovirus of the genus Orbivirus (serotypes of species African horse sickness virus), is endemic in parts of central and southern Africa, is marked by fever, edematous swellings, and internal hemorrhage, and is transmitted chiefly by biting flies of the genus Culicoides—called also
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