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Published online 10 January 2002 | Nature | doi:10.1038/news020107-7

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Sheep threat fenced out

Estimates of CJD risk from sheep remain woolly.

If mad cow disease has spread to British sheep, the ongoing risk of human infection from eating sheep products may be greater than the existing threat from cattle, predicts new research.

The risk of getting variant Creutzfeldt-Jakob disease (vCJD) - the human form of bovine spongiform encephalopathy (BSE, or mad cow disease) - from sheep could be negligible.

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