Echoviruses and Reoviruses

The ECHO viruses (enteric cytopathogenic human orphan viruses) comprise a subgroup of the human enteroviruses: all are infectious for human beings. Although several may share common antigens, most are serologically unrelated. They have been grouped together with polio-and Coxsackie viruses because of similar physico-chemical properties, and because they are recoverable from the alimentary tract of human beings. Since 1951 when the first was recognized (ROBBINS et al., 1951),32 more have bee...