The Alberta cow recently confirmed to be infected with Bovine Spongiform Encephalopathy is the second one from the same farm.
The other case was in 2010.
That raises even more questions about the Canadian Food Inspection Agency’s ability to keep the disease under control and trade channels open.
China has now joined five other countries that are refusing to take any beef from Canada.
The CFIA did not say whether it caught the second case from the same farm because it’s examining the brain tissue of all animals sent to slaughter from that farm.
Nor has it explained how the second cow, born after a ban on feeding rendered materials to cattle, was able to catch the disease via feed.
It’s the CFIA which has said feed is the most likely source of infection for that cow.