A UK scientist, who advises the government on BSE (Bovine Spongiform Encephalopathy), says that the incubation period of variant CJD in humans may be as long as 30 years. Professor John Collinge, a member of the Spongiform Encephalopathy Advisory Committee (SEAC), said there could be a scenario where eventually thousands of people could die from the human form of mad cow disease. His colleague Roy Anderson revealed that as many as 130,000 people in Britain could die from vCJD.