NCIt definition : A species of non-enveloped, spherical and icosahedral viruses in the Picornaviridae
family and Enterovirus genus. The genome is composed of single-stranded, positive-sense
RNA. Echoviruses are found in humans and cause aseptic meningitis, encephalitis, paralysis
and myocarditis via direct fecal-oral contamination, respiration and oral secretions,
or indirect routes.;
Alternative definition : CDISC: Any viral organism that can be assigned to the species Echovirus.;