RNA viruses that have their genetic material encoded in the form of single-stranded, positive-sense RNA. Unlike RETROVIRUSES they do not employ DNA intermediates in their life-cycle.

Synonyms: RNA Virus, Positive-Strand, Positive Strand RNA Viruses, RNA Viruses, Positive-Strand, RNA Viruses, Sense-Strand, Group IV Single-Stranded RNA Viruses, Sense Strand RNA Viruses, RNA Virus, Sense-Strand, Positive Sense RNA Viruses, Sense-Strand RNA Viruses, Positive-Strand RNA Viruses, Sense-Strand RNA Virus, (+) Sense RNA Viruses, Group IV Single Stranded RNA Viruses, Positive-Strand RNA Virus