Reoviridae
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Introduction
Reoviridae include rotaviruses and orbiviruses, such as African Horse Sickness and Bluetongue. Pathogenesis ranges from acute alimentary infections to infections of the vascular endothelium. "REO" stands for "Respiratory-Enteric-Orphan."
Morphology
- All are non-enveloped dsRNA viruses
- Spherical and medium-sized with characteristic appearances
- Segmented genome, with each segment encoding a separate viral protein
Virulence and Pathogenesis
- Reoviridae are resistant viruses that can persist in the environment for several weeks
Epidemiology
- Many reoviruses infect domestic animals without causing disease
- They have been implicated in stunting syndrome of chickens