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…while concern grows that existing precautions may let infection through

By Andy Coghlan

12 October 2002

BLOOD contaminated with the human form of mad cow disease could spread the disease to at least 1 in 10 of people unlucky enough to be given it. Even filtering out certain components before transfusion might not be enough to prevent infection.

No one has got vCJD from a blood transfusion yet. And the risk of this happening is low because there have been few cases of the disease so far. Nevertheless, a long-running experiment in which 24 sheep were given blood infected with BSE suggests the disease can indeed spread this way. Two years ago it was revealed that…

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