[Characteristic] Presence of agent in lymphoid tissue [Variant CJD] Readily detected [Classic CJD] 
Not readily detected
6 8 y e a r s
4 – 5 m o n t h s
D e m e n t i a ; e a r l y n e u r o l o g i c s i g n s
O f t e n p r e s e n t
N o t r e p o r t e d
V a r i a b l e a c c u m u l a t i o n .
N o t r e a d i l y d e t e c t e d
M a y b e p r e s e n t