Preliminary tests performed at a Alberta provincial laboratory and at the CFIA's National Centre for Foreign Animal Disease in Winnipeg were unable to rule out BSE but there was no positive test within Canada. The CFIA sent specimens to the World Reference Laboratory at Weybridge, United Kingdom, where one person made a subjective evaluation of the sample which verified the presence of BSE. It was pointed out to me that a subjective evaluation such as this should never have been made by one person but by a panel of three qualified individuals and as such the positive determination is open to question. I understand all the BSE tests can give false positives although some tests are considered highly accurate. Don’t know what information John Schmidt has but there were allegations that there was no DNA link established between the subject cow and the actual sample that was tested in Britain.
It would seem reasonable to assume that once the source herd was established and the other animals in that herd that had consumed the same feed were tested and were found negative then either the positive test cow had acquired BSE by some other means than by consuming contaminated feed or else the positive test was inaccurate.
It would seem reasonable to assume that once the source herd was established and the other animals in that herd that had consumed the same feed were tested and were found negative then either the positive test cow had acquired BSE by some other means than by consuming contaminated feed or else the positive test was inaccurate.
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