<unk>  is a polyphyletic group of viruses associated with enteric disease in humans. The name is derived from "enteric cytopathic human orphan virus". These viruses were originally not associated with disease, but many have since been identified as disease-causing agents. The term<unk> " was used in the scientific names of numerous species, but all<unk> es are now recognized as strains of various species, most of which are in the family Picornaviridae.
Echovirus
Arbovirus
Poliovirus
Coronavirus
Coronavirus 
Oncovirus
Sapovirus
Rhinovirus