| The type species in the genus NOROVIRUS, first isolated in 1968 from the stools of school children in Norwalk, Ohio, who were suffering from GASTROENTERITIS. The virions are non-enveloped spherical particles containing a single protein. Multiple strains are named after the places where outbreaks have occurred. | infection: coord IM with CALICIVIRIDAE INFECTIONS (IM) + probably GASTROENTERITIS (IM) | Other names Norwalk Agent | ||