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Related Experiment Video

Updated: Jul 9, 2026

Detection of Alternative Splicing During Epithelial-Mesenchymal Transition

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Published on: October 9, 2014

Variant Creutzfeldt-Jakob disease.

¹Department of Neurogenetics, Imperial College School of Medicine at St Mary's, London, UK. J.Collinge@ic.ac.uk

Lancet (London, England)

|August 10, 1999

Summary

Bovine spongiform encephalopathy (BSE) prions have caused a new human prion disease, variant Creutzfeldt-Jakob disease (vCJD). Public health risks from potential iatrogenic transmission and unquantified exposure require further investigation.

Area of Science:

Neuroscience
Epidemiology
Infectious Diseases

Background:

Bovine spongiform encephalopathy (BSE) has been linked to a novel human prion disease, variant Creutzfeldt-Jakob disease (vCJD).
Previous prion disease epidemics suggest exposure during the preclinical phase of the BSE epidemic may have caused early vCJD cases.
The long-term evolution of vCJD is anticipated, with potential for widespread future cases.

Purpose of the Study:

To analyze the transmission dynamics and public health implications of BSE prions in humans.
To highlight the urgent need for diagnostic tools and risk assessment strategies for vCJD.
To address concerns regarding potential iatrogenic transmission and interspecies prion transfer.

Main Methods:

Review of incubation periods from historical human prion disease epidemics.

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Analysis of species transmission barriers.

Assessment of potential iatrogenic transmission routes (blood, tissue, surgical instruments).

Main Results:

Early vCJD cases likely resulted from exposure during the BSE epidemic's preclinical phase.
The number of individuals incubating vCJD is unknown, posing a significant public health challenge.
Prions' resistance to sterilization raises concerns about surgical instrument contamination.
Iatrogenic transmission via blood transfusion and tissue donation is a potential risk.
Current diagnostic methods (tonsil biopsy) are limited; a prion-specific blood test is needed.

Conclusions:

The emergence of vCJD from BSE represents a significant public health threat.
Further research is critical to quantify transmission risks and develop effective diagnostic and preventative measures.
The possibility of BSE prions infecting other species and posing ongoing human health risks remains.