[Creutzfeldt-Jakob disease in the Paris metropolitan area. Study of annual mortality in different density zones in relation to the age of population].

: A study of all patients with Creutzfeldt-Jakob disease in the Paris metropolitan area dying during the 13 year period 1968-1980 reveals a positive correlation between annual mortality and population density, that is independent of variation in population age structure. This observation is consistent with the hypothesis of random interhuman-disease transmission.