Bovine Ephemeral Fever
英[ˈbəʊˌvaɪn ɪˈfemərəl ˈfi:və]美[ˈboˌvaɪn ɪˈfɛmərəl ˈfivɚ]
Bovine ephemeral fever (BEF) also known as Three Day Sickness is an arthropod vector-borne disease of cattle and is caused by the Ephemerovirus virus of the Rhabdoviridae family of virus. The Rhabdoviridae are a class V virus according to the Baltimore classification of viruses.