Orbivirus is a genus of viruses that primarily infects insects and can also affect vertebrates, particularly livestock. These viruses are known for causing diseases such as Bluetongue in sheep and African horse sickness in horses. They are transmitted mainly by biting midges and mosquitoes. The structure of Orbivirus includes a double-stranded RNA genome and a protein coat. These viruses are part of the Reoviridae family and are characterized by their segmented genetic material. Control measures often focus on managing insect populations to reduce transmission and protect affected animals.