All 3 animals mentioned are farmed (deer relatively recently in this country) and have most likely been fed contaminated feed supplements, so BSE has probably crossed from cattle into these species and they are threat to human health.
(All 3 animals; mentioned; ) (they; are threat; to human health) (All 3 animals mentioned; have; most likely been fed contaminated feed supplements) (they; are threat to; human health)
All 3 animals they All 3 animals mentioned they
mentioned are threat have are threat to
to human health
most likely been fed contaminated feed supplements
human health