[Epidemiology of Creutzfeldt-Jakob disease in the Paris area].

The area studied includes the city of Paris and the neighboring departments of Val-d'Oise, Seine-Saint-Denis, Hauts-de-Seine, Yvelines, Essonne, Val-de-Marne, and Seine-et-Marne. Case finding methods and diagnostic criteria are defined. The temporal and spatial distribution of cases is described, and the absence of case clustering is noted. Incidence per million people (per year) was found to be 1,09 in the city, 0,55 in the adjacent departments, and 0,25 in the peripheral departments. These results are discussed.