Anti-gay propaganda and oppression in Africa don't IMO stem from issues to do with AIDS. They are religion-based. Both Muslims and Christians there are condemnatory of gay activity because they say God tells us it is sinful. Gays there hide their sexuality, or they'd be attacked, even killed. Regarding testing of immigrants to UK for HIV, I think it would be a good idea from all points of view. Testing for TB is mandatory now, but only for immigrants of certain countries, which is silly. If someone is discovered to have a life-threatening disease, it's in our interest and theirs to get it identified and treated. One of the major problems in Africa is the male-dominant attitude whereby a man is not disposed to protect his wife/woman from his infection by using condoms. If women were rather more empowered, they might feel they have the right to insist on this. My husband tells me that in Cote d'Ivoire, the younger women in the cities are now far more assertive about safe sex, which can only be a jolly good thing.