nairoviridae nairoviridae nairoviridae is a family of viruses in the order bunyavirales. its name derives from nairobi sheep disease, caused by the member nairobi sheep disease orthonairovirus. nairoviridae crimean-congo hemorrhagic fever orthonairovirus virion and structure nairovidae member genomes virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: negarnaviricota class: ellioviricetes order: bunyavirales family: nairoviridae taxonomy the family contains the following genera: norwavirus ocetevirus orthonairovirus sabavirus shaspivirus striwavirus xinspivirus