The Canadian Food Inspection Agency (CFIA) says the Alberta cow that tested positive for bovine spongiform encephalopathy (BSE), commonly known as mad cow disease, was born two years after the country instituted tougher bans on animal feed to prevent the disease.
CFIA confirmed the presence of BSE in one cow in Alberta, Canada on Feb. 11. Officials say cases of BSE are rare in Canada as this is the first positive case in four years.