Any member of the genus Bunyavirus or family Bunyaviridae of enveloped viruses with a three-segmented single-stranded RNA genome, most of which are arthropod-borne pathogens of humans and other mammals, typically causing fever or encephalitis. Also (in form Bunyavirus): the genus itself.
The large family Bunyaviridae consists of five genera, Bunyavirus, Phlebovirus (including the viruses causing sandfly fever, Rift Valley fever, etc., often transmitted by phlebotomines), Nairovirus (including the viruses causing Crimean-Congo haemorrhagic fever, Nairobi sheep disease, etc.), Tospovirus (including tomato spotted wilt virus and several other plant viruses transmitted by thrips), and Hantavirus (Hantaan virus and other persistent rodent viruses, which can be transmitted to humans by contact with excreta, causing haemorrhagic fever with renal syndrome).
1970s. From bunya- (in Bunyamwera, the name of an area within the Semliki Forest of Uganda) + virus.