Disseminated sclerosis

Abstract

An attempt was made to contact and study all persons in whom the onset of disseminated scle -rosis occurred while they were living within a given district. No evidence was found within the district studied that areas of high prevalence occurred, except for the Kingston area. This high prevalence in Kingston was further examined and thought to be due to errors in sampling. The suggestion is made that similar errors may have occurred in other cases where variations in incidence or prevalence have been reported.