Simarterivirinae is a subfamily of enveloped, positive-strand RNA viruses which infect vertebrate. The subfamily is in the family Arteriviridae and order Nidovirales. The subfamily contains six genera.
Member viruses are enveloped, spherical, and 45âÂÂ60 nm in diameter.
Variarteriviruses have a positive-sense single-stranded RNA genome.
The subfamily Simarterivirinae contains six genera: