Definition: A family of double-stranded RNA viruses, some of which (Reovirus) previously were included with Echoviruses, and others (Orbivirus), with arboviruses. Virions are 60–80 nm in diameter, usually naked, and ether resistant; genomes contain double-stranded, segmented RNA (MW 10–16 × 106); capsids are of icosohedral symmetry with two layers of capsomeres. The family comprises nine genera: Orthoreovirus, Orbivirus, Rotavirus, Coltivirus, Aquareovirus, cytoplasmic polyhedrosis virus group (Cypovirus), and three plant reovirus groups (Phytoreovirus, Fijivirus, and Oryzavirus).
[respiratory enteric orphan + viridae]
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