Viruses in Seadornavirus are non-enveloped, with icosahedral geometries, and T=13, T=2 symmetry. The diameter is around 60-70 nm. Genomes are linear and segmented. Segments range in length from 862 to 3747 base pairs, totaling 21 kb in length. The genome codes for 12 proteins.
Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The virus exits the host cell by monopartite non-tubule guided viral movement. Human, cattle, pig, mosquitoes (arthropod-borne), and mosquitoes serve as the natural host. Transmission routes are zoonosis and bite.
^Attoui H, Mohd Jaafar F, de Lamballerie X, Mertens PPC Seadornavirus, Reoviridae In: Fauquet CM, Mayo MA, Maniloff J, Desselberger U, Ball LA, editors. Virus taxonomy: eighth report of the international committee on taxonomy of viruses. London: Elsevier/Academic Press; 2005. p. 504–10