Okavirus Virus classification Group: Group IV ((+)ssRNA) Order: Nidovirales Family: Roniviridae Genus: Okavirus Species
Yellow head virus
The type species is Gill-associated virus.
The name is derived from the 'Oka' or lymphoid organ in which the viruses are commonly detected and in which pathology occurs during acute infections. Lymphoid organs are anatomical structures common to penaeid shrimp.
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