Bone/ Blood Meal and Mad Cow Disease
from "Brian" contains these words:
The most recent [ West of England Medical School-pub. May2004] research
suggests that eating meat might very well have little or no relevance~~ the
prion being capable of withstanding autoclaving of instruments.
The work has shown that removed tonsils and appendixes from healthy
patients show a significant [but small] proportion having the prion. The
proportion, when extrapolated, means there are several thousand carriers of
vCJD who could have contaminated others, or been contaminated, via contact
with affected, but supposedly sterilised, instruments.
Or via blood donations. In the UK, people who recieved a transfusion
during the early 80s are banned from donating blood. Some countries no
longer import any human blood products from the UK.