Final answer:
Variant Creutzfeldt-Jakob Disease (vCJD) is the rare form of CJD contracted by eating infected animal meat. It is caused by prions and can spread from human to human.
Step-by-step explanation:
Variant Creutzfeldt-Jakob Disease (vCJD) is the rare form of CJD contracted by eating meat from an infected animal. vCJD is caused by prions, which are abnormal proteins that can cause degeneration of neural tissue. It has been documented that the disease can spread from human to human through blood transfusion.