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Medical Definition of Wesselsbron disease
1. A mosquito-borne disease of sheep and man caused by the Wesselsbron disease virus, a member of the family Flaviviridae, and characterised by abortion and lamb mortality in sheep and by fever, headache, muscular pains, and mild rash in humans. Synonym: Wesselsbron disease. Origin: Wesselsbron, town in South Africa where causative agent first isolated (05 Mar 2000)