vahetu kontakti või putukate kaudu leviv, gripitaoline või hemorraagilise palaviku sümptomitena avalduv koduloomade ja inimeste eluohtlik bunyaviirushaigus Ida-Aafrikas, an infection common in Africa caused by a bunyavirus; transmitted by mosquitoes or by handling infected animals; http://www.thefreedictionary.com/Rift+Valley+fever an acute usually epizootic mosquito-borne disease of domestic animals (as sheep and cattle) chiefly of eastern and southern Africa that is caused by a bunyavirus of the genus Phlebovirus (species Rift Valley fever virus), is marked especially by fever, abortion, death of newborns, diarrhea, and jaundice, and is sometimes transmitted to humans usually in a milder form marked by flulike symptoms; http://www.merriam-webster.com/dictionary/