In 2005, the data transfer fees for Internet service provider (ISP) connections to the inter-net was approximately $5 per 100 GB ($.05 per GB) of data transfer. The streaming data transfer rate of a standard television quality digital video signal is approximately 4.0 Mbps or 500 kBytes per second (8 bits per Byte).
Yet the various forms of the disease are more alike than they are different, and everyone affected by CJD must eventually contend with serious mental and physical problems. Typical first symptoms include personality changes like anxiety and depression, memory loss, confusion and impaired thinking.
Neurodegenerative prion diseases are often called spongiform encephalopathies because they leave the brain riddled with holes like a sponge. In animals, prion diseases include scrapie in sheep and bovine spongiform encephalopathy, commonly known as mad cow disease in cattle. In humans, diseases such as kuru and Creutzfeldt-Jakob disease (CJD) are also thought to be caused by prions. All the diseases are characterized by loss of motor control, dementia, paralysis, and eventual death due to massive destruction of brain tissue.