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echovirus
(ek´o-vi″rәs)
a species of viruses of the genus Enterovirus; the name was derived from the first letters of the description “enteric cytopathogenic human orphan.” At the time of the
isolation of the viruses the diseases they caused were not known, hence the term “orphan,” but it is now known that they cause
many different types of human disease, especially viral meningitis, diarrhea, and various respiratory diseases.

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