Can encephalitis be caused by creutzfeldt-jakob disease?

No. Encephalitis is and acute inflammation of the brain generally caused by a virus or bacteria. It can also occur with automimmune disease like lupus. Creutzfeld- jacob disease is caused by a very small protein called a prion. It causes a rapidly progressive dementia znd death due to neuronal cell death. It can come from tainted meat("mad cow disease") , occur sporadically or rarely be inheritted.
No. Creutzfeldt-jakob disease is a rare degenerative brain disease, and is not considered to be encephalitis, rather an encephalopathy.