Is Creutzfeldt-Jakob Disease Transmitted in Blood?
Author Information
Author(s): Maura N. Ricketts, Neil R. Cashman, Elizabeth E. Stratton, Susie ElSaadany
Primary Institution: Laboratory Centre for Disease Control, Health Canada
Hypothesis
Is Creutzfeldt-Jakob disease transmitted through blood transfusions?
Conclusion
Current evidence suggests that while CJD may be present in blood, its transmission through blood transfusions is likely rare.
Supporting Evidence
- Human CJD has been reported to be transmitted to mice by injecting blood from human patients directly into mouse brain.
- Animal studies have shown that the agent causing scrapie replicates first in the spleen and other lymphoid tissues.
- Surveillance systems have found cases of CJD among persons who have received blood transfusions, but none have been linked to blood transmission.
Takeaway
Creutzfeldt-Jakob disease is a serious brain disease that might spread through blood, but it's very rare and not fully understood.
Methodology
The study reviewed existing evidence and case reports regarding the transmission of CJD through blood.
Potential Biases
There may be biases in case reports due to strong suspicions about iatrogenic sources.
Limitations
The rarity of CJD makes it difficult to establish a clear link between blood transfusions and the disease.
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