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Health Department

11/26/24 Public Health Education Topic: Creutzfeldt-Jacob Disease

Per CDC:

What to know

  • Classic CJD is a quick-moving, always fatal disease that occurs worldwide.

  • It affects the brain and causes dementia and other problems.

  • CJD mostly occurs in older adults.

  • There is no treatment or cure.

  • It usually leads to death within a year from when symptoms begin.


CJD is caused by a prion, a type of infectious protein. Prions trigger normal proteins in the body to misfold, leading to CJD.

CJD causes dementia and other neurologic problems. Once symptoms begin, it can lead to death in months to a year.

Classic CJD occurs worldwide in older adults, with the average age in the late 60s. Very few cases occur in people who are younger than 30 years old.

CJD occurs worldwide with an estimated rate of about one to two illness per one million population members per year. In recent years in the United States, about 500-600 cases have been reported per year.





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