- Dispatches The Epidemiology of Creutzfeldt-Jakob Disease in Canada: A Review of Mortality Data Download Article Creutzfeldt-Jakob disease (CJD), and particularly its transmissibility through blood and blood products, has become a focus of concern in Canada. The recent identification of new variant CJD led to a review of the Canadian mortality database to identify any clustering of CJD by age, ...www.cdc.gov/ncidod/eid/vol3no1/stratton.htm