A genus of RNA viruses in the family Picornaviridae that are rarely associated with human disease and are recovered frequently from rodents, i.e., Columbia S.K. virus, mengo virus.
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Car·dio·vi·rus (kahrґde-o-vi″rəs) [cardio-(1) + virus] a genus of viruses of the family Picornaviridae that cause encephalomyelitis and myocarditis; it contains two species, encephalomyocarditis virus and Theilovirus.Medical dictionary. 2011.