MadSci Network: Medicine |
Hi David,
First of all, hope you don't get to much rain in Scotland... ;)
The prions which are said to be the cause of scrapie, BSE (Bovine Spongiform Encephalopoty)
and CJD (different kinds though) are hard to destroy. However, some of the
data published in newspapers is not really accurate. Yes even at high
temperatures not all prions can be completely destroyed, but 99.99% is still
good.
In the UK and most other places in the world, BSE-infected cows will not
be used for human consumption. Sometimes, the cows don't show symptoms yet
when butchered so you could accidently be infected by BSE. The real question
is however, how infectious to humans is BSE. A year ago there were 7 possible
cases of CJD (Creuzfeld Jacobs Disease) caused by BSE, now there are not really
more cases known, although an increase should have been expected.
There is not much BSE-causing PrP (prion) outside the brain and spinal cord.
In meat some may be present, but milk is considered to be safe, although milk
from BSE-infected cows will be destroyed too.
In summary, in my opinion there is not much risk in eating meat or drinking
milk in Europe and the milk will be more safe then the meat. After all, a direct
link between BSE and CJD has not been found.
Regards,
Rolf
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