| diagnostic evaluation for creutzfeldt-jakob disease in massachusetts, 1991-2001. | surveillance for creutzfeldt-jakob disease (cjd) in the united states has become a focus of public health attention due to concerns about disease acquired through exposure to transmissible spongiform encephalopathy in other species. a definitive diagnosis requires neuropathologic examination, yet concerns about the invasiveness of procedures and infection control may be barriers to brain biopsy or autopsy in patients with suspected cjd. | 2005 | 16107981 |