visited the UK during this time frame, you are unable to donate blood in
1986 — 98, the UK saw an epidemic of bovine spongiform encephalopathy (BSE), a
neurodegenerative disease in cattle likely caused by unsafe feeding practices.
By ’96 the disease appeared to have crossed to humans, as scientists identified
the first case of vCJD and strongly linked it to BSE. The human form
was fatal and incurable: as of May 2015, it had killed at least 228
people, including 177 in the UK and 27 in France.