Canada has found what may be a second case of mad cow disease, officials said a day after the US said it planned to reopen its border to Canadian beef.
The border was closed 19 months ago when a cow in northern Alberta tested positive for mad cow disease, or bovine spongiform encephalopathy (BSE). The US Department of Agriculture said Wednesday the border could be opened in March.
The Canadian Food Inspection Agency on Thursday released few details on the new suspect case, except to identify it as a 10-year-old dairy cow.
The preliminary testing results were completed on Wednesday, said the agency, adding that the testing was conducted after the cow was identified as a "downer" -- unable to walk.
The finding is not definitive, but the CFIA says multiple screening tests have yielded positive results.
No part of the animal entered the human food or animal feed systems, the agency said.
Samples are being analyzed at the Canadian Science Center for Human and Animal Health in Winnipeg, Manitoba and confirmation is expected in three to five days.