Don't laugh, this method apparently works very well, as any Canadian cattle producers who lived through BSE can tell you. While Canada was testing for, and knew what to look for thanks to wasting disease, found multiple cases, the US with 10 times as any animals, and selective vision, could only find one animal, and traced it back to Canada.
https://www.cdc.gov/prions/bse/bse-north-america.html#:~:text=Through%20August%202018%2C%20 BSE%20surveillance,Kingdom%20(see%20graph%20below) . https://www.cdc.gov/prions/bse/bse-north-america.html#:~:text=Through%20August%202018%2C%20 BSE%20surveillance,Kingdom%20(see%20graph%20below) .
https://www.cdc.gov/prions/bse/bse-north-america.html#:~:text=Through%20August%202018%2C%20 BSE%20surveillance,Kingdom%20(see%20graph%20below) . https://www.cdc.gov/prions/bse/bse-north-america.html#:~:text=Through%20August%202018%2C%20 BSE%20surveillance,Kingdom%20(see%20graph%20below) .
Comment