<unk><unk><unk>  may be classified into four groups: Sporadic CJD, familial CJD and iatrogenic CJ. Sporadic CJD is the most common type and is idiopathic. Familial CJD is caused by inheritance of abnormal prions and is exceptionally rare. Iatrogenic CJ is very rare and the principal sources of outbreaks are: contaminated growth hormone derived from human cadavers with undiagnosed CJD infections, contaminated dura mater grafts, neurosurgical instrument contamination, corneal grafts, gonadotrophic hormone and transfusion of blood products.
Creutzfeldt-Jakob disease classification
Creutzfeldt-Jakob disease diagnostic criteria
Japanese encephalitis classification
Alzheimer's disease diagnostic criteria
Viral encephalitis classification
Creutzfeldt-Jakob disease differential diagnosis
Multiple sclerosis classification
Tick-borne encephalitis classification