Pisoniviricetes is a class of positive-strand RNA viruses which infect eukaryotes.

[1][2] A characteristic of the group is a conserved 3C-like protease from the PA clan of proteases for processing the translated polyprotein.

[3][4][5] The name of the group is a portmanteau of member orders "picornavirales, sobelivirales, nidovirales" and -viricetes which is the suffix for a virus class.

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