Lonestar: You are correct when you say that it is primarly the brain and spinal cord.
The problem is that no one understands prions. It ain’t like virus and bacteria.
Another problem is the incubation time. It is about five to ten years.
CJD is a serious problem and the results is unpredictable.
It is unclear how the problem will affect the blood and plasma donation process in the USA. That will be ascertained in the next few months.
There is a question the the blood donation process now that ask if you have been in the UK and consumed beef? If that is implicated in the USA, it has severe implications to the blood donation process.
Paul E. Smith