Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Originally reported in 1980s in the UK, the bovine spongiform encephalopathy is known to affect the central nervous system of cattle, tightly correlated to a rare and fatal human neurodegenerative disease, called Creutzfeldt-Jakob disease. With a long incubation period and a lethal outcome, the disease is caused by a prion protein, whose exact origins are still unknown. New research carried on the neurodegenerative disease, showed some associations to other misfolded proteins responsible for Parkinson's and Alzheimer's diseases, offering new hope, as well as more clear insights in their treatment. Learn more about the bovine spongiform encephalopathy, its history, causes and preventive measures in this book.