Avibirnavirus
| Avibirnavirus | |
|---|---|
| Virus classification | |
| Group: | Group III (dsRNA) |
| Family: | Birnaviridae |
| Genus: | Avibirnavirus |
| Type Species | |
Avibirnavirus is a genus of viruses, in the family Birnaviridae. Young chickens and other fowl serve as natural hosts. There are currently only one species in this genus: the type species Infectious bursal disease virus. Diseases associated with this genus include: IBDV causes severe inflammation of the bursa of fabricius. The disease causes considerable morbidity and mortality in an acute form or as a consequence of severe immunosuppression provoked by the destruction of immature B-lymphocytes within the bursa of fabricius.
Group: dsRNA
Viruses in Avibirnavirus are non-enveloped, with icosahedral and Single-shelled geometries, and T=13 symmetry. The diameter is around 70 nm. Genomes are linear and segmented, around 15.2.9-3kb in length. The genome codes for 5 proteins.
Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the double-stranded RNA virus replication model. Double-stranded rna virus transcription is the method of transcription. Young chickens and other fowl serve as the natural host. Transmission routes are contamination.
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