How many people in Canada and the US contracted AIDS through infected blood?
There are plenty of events in your life or lifestyle habits that can get you excluded from giving blood.
It even includes “been outside the US or Canada in the past 3 years”.
AND: “From 1980 through 1996, Did you spend time that adds up to three (3) months or more in the United Kingdom? (Review list of countries in the UK)”
The concern there is mad cow disease , or Jacob-Creuzfeld Syndrome, I believe.
For a while the rule was anyone who had spent 6 months or more in Europe since Jan. 1, 1980, was barred from giving blood, which excluded a lot of military people and their families who would otherwise be eligible, but they finally changed that to 5 years.
I couldn't donate blood because I spent a semester in France in 1984. I felt bad because I'm the universal blood type, but it's better than possibly giving someone the human equivalent of mad cow disease.