[Creutzfeldt-Jakob disease (prevalence and the problems of etiology and transmission)].

The literature on the prevalence, etiology, and transmission of subacute spongiform encephalopathy (Creutzfeldt--Jakob disease) is analysed. The author dwell at length on the incidence in various countries, mechanisms and ways of spread of this disease including those associated with medicinal treatment and everyday contacts. Clinico-morphological criteria of diagnosis are discussed.