prions

British cattle feed in all probability contaminated with Bovine Spongiform Encephalitis prions was exported to third world countries for years after its exportation was banned to the European Union by the British government.

The first two cases of humans with variant Creutzfeldt-Jakob Disease (vCJD), the disease caused by BSE prions in human beings, have been confirmed in Thailand. Before 1996, Thailand was a major importer of British livestock feed.

Other suspected cases in South Korea and Spain, both of which were importers of British cattle feed, are waiting for confirmation.
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