Birnaviridae2

• Avibirnavirus is a genus of viruses in family Birnaviridae. (wikipedia.org)
• IBD is caused by a virus member of the Avibirnavirus genus and Birnaviridae family, viruses with bisegmented dsRNA genomes with a total of about 6 kbp forming icosahedral, non-enveloped virions Delmas B, et al. (crimsonpublishers.com)