The American Red Cross will no longer take blood donations from me, because they think I might have mad cow disease. Anybody who has spent more than 3 months in the UK since 1980, or 6 months elsewhere in Europe, is now ineligible to donate blood. In fact, one of the major vectors of possible nvCJD spread isn’t blood donation—it’s pharmaceuticals, particularly vaccinations. Many vaccinations are cultured in animals, and UK research suggests that they may carry nvCJD.