Prions cause a number of fatal diseases such as mad cow disease in cattle, scrapie in sheep and kuru and Creutzfeldt-Jakob disease (CJD) in humans.

朊病毒是一种畸形的蛋白质，导致一些致命的疾病：如疯牛病，羊痒病，人类库鲁和克雅氏病(CJD, vCJD)。

youdao

The ministry would also like to oversee a wider distribution of genes from the small percentage of British rams that are resistant to scrapie, a sheep disease similar to bovine spongiform encephalopathy, or mad-cow disease as it is more commonly known.

ECONOMIST: The search for long-lived sheep sperm