Also, it's no longer true in many (most?) places that "gay people" can't give blood, as the distinguishing factor nowadays is usually recent sexual activity.
Practically speaking this means that the vast majority of gay men cannot donate blood -- even if the criteria don't explicitly say the words "gay men cannot donate blood". Don't get me wrong, I agree that there are purely statistical reasons why these restrictions are in place (blood banks aren't out looking for excuses to reduce their supplies) -- but it's really not accurate to say that it's no longer the case that gay men cannot donate blood.
I also hasten to note that having many sexual partners is not considered "at-risk sexual activity" (though there are some exceptions), while two monogamous men in a homosexual relationship having sex is always considered as being "at-risk".
https://www.theguardian.com/us-news/2020/apr/18/us-blood-don...
Note that includes gay men in monogamous relationships too. It is a ban on gay men by another name.
https://www.capeandislands.org/post/why-us-still-bans-blood-...
They still let me sign up to the organ donor list though.
Edit: foot and mouth disease was a decade later. I don't believe it's a problem in humans?