Bunyaviridae. Serological relationships.
The family Bunyaviridae comprises 5 genera of lipid-enveloped viruses with trisegmented RNA genomes. One of the genera, Bunyavirus, comprises over a quarter of the known arboviruses. The members of the Hantavirus genus are apparently the exception in that they are not arthropod-borne. The genera are sorted largely on serological grounds. The Nairoviruses, in addition to the presence of the physical marker of a higher molecular weight nucleoprotein, include Congo-Crimean haemorrhagic fever, an apparently isotypic virus of wide distribution.