Creutzfeldt-Jakob disease and bovine spongiform encephalopathy. Bovine spongiform encephalopathy is being maintained by vertical and horizontal transmission.
Lacey
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D000818:Animals; D002417:Cattle; D018562:Disease Transmission, Infectious; D016643:Encephalopathy, Bovine Spongiform / Q000635:transmission*; D018445:Infectious Disease Transmission, Vertical