The Canadian Food Inspection Agency (CFIA) has confirmed the diagnosis of bovine spongiform encephalopathy (BSE) in a mature bull from Alberta. The animal’s carcass is under CFIA control, and no part of it entered the human food or animal feed systems.
Preliminary information indicates that the age of the animal falls well within the age range of previous cases detected in Canada under the national BSE surveillance program. This signifies that the animal was exposed to a very small amount of infective material, most likely during its first year of life.
An epidemiological investigation directed by international guidelines is underway to examine what the animal was fed early in its life and to identify its herdmates at the time. All findings will be publicly released once the investigation concludes.
The finding of a mature animal should not impact Canada’s BSE country categorization submission to the World Organization for Animal Health (OIE). The science-based BSE risk-level determination process requires that a country is able to demonstrate a full understanding of the pathways that resulted in BSE exposure and expression, as well as the implementation of appropriate comprehensive measures to block those pathways and protect human and animal health, leading to the eradication of the disease over time.
The animal was identified at the farm level by the national surveillance program, which has detected all cases found in Canada. The program targets the highest risk cattle populations and has tested roughly 150,000 animals since 2003. The surveillance results reflect an extremely low incidence of BSE in Canada.