The federal Advisory Committee on Blood Safety and Availability Friday declined to recommend a change in restrictions on blood donations by homosexual men. Homosexual groups pushed hard to reverse the ban since it makes reversing DADT make even less sense. The ban was put in place in the 80's when the hemophiliac population was devastated by AIDS contaminated blood.
http://www.latimes.com/news/nationworld/nation/la-na-blood-gays-20100612,0,5423475.story
In UK research shows a 5x increase of HIV infection from dropping their ban
"Research shows that completely removing the current exclusion on blood donation from men who have sex with men would result in a fivefold increase in the risk of HIV-infected blood entering the blood supply. While changing deferral to one year from the last sexual contact would have a lesser effect, it would still increase this risk by 60%.
http://www.blood.co.uk/can-i-give-blood/exclusion/
A few months ago CDC said homosexual men were 44x more likely to be diagnosed with HIV.
"CDC Analysis Provides New Look at Disproportionate Impact of HIV and Syphilis Among U.S. Gay and Bisexual Men
"A data analysis released today by the Centers for Disease Control and Prevention underscores the disproportionate impact of HIV and syphilis among gay and bisexual men in the United States.
The data, presented at CDC's 2010 National STD Prevention Conference, finds that the rate of new HIV diagnoses among men who have sex with men (MSM) is more than 44 times that of other men and more than 40 times that of women."(63% of HIV diagnoses in UK)
http://www.cdc.gov/nchhstp/newsroom/msmpressrelease.html