Risk of CJD

To prevent contact with prion protein.
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A material, manufactured from human cadavers, was used as a "patch" for the thick outer layer of the brain, the dura, in neurosurgery. However, Lyodura was withdrawn from the market nine years ago following links with CJD.
The current scare was raised following the inquest into the death of a 34-year-old man, Simon Stratford, in England who contracted the virus from a contaminated Lyodura graft.