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The first farmed cervid to display signs of CWD was an elk that fell ill in 1996 on a ranch in Saskatchewan. 牧場(chǎng)中的鹿首次出現(xiàn)慢性消耗病的徵兆，是1996年在加拿大薩尅其萬(wàn)省一処牧場(chǎng)的某衹麋鹿。