Relationship of California group virus infection and mental retardation: seroepidemiological observations.

A plaque reduction neutralisation test was utilised to determine the prevalence of antibodies to California group virus (LaCrosse subtype) among 612 moderately to profoundly retarded subjects resident in two Wisconsin state institutions. Neutralising antibodies were detected in the sera of fifty-one (8 per cent) of the subjects tested. Age and sex… CONTINUE READING