Betanodavirus

Betanodavirus
Electron micrographs of grouper nervous necrosis virus particles
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Magsaviricetes
Order: Nodamuvirales
Family: Nodaviridae
Genus: Betanodavirus

Betanodavirus, or nervous necrosis virus (NNV), is a genus of nonenveloped positive-strand RNA viruses in the family Nodaviridae. Member viruses infect fish and cause viral nervous necrosis (VNN) and viral encephalopathy and retinopathy (VER). The genus contains four species.

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