Why doesn FDA allow men who have had sex with men to donate blood?
A history of male-to-male sex is associated with an increased risk for the presence of and transmission of certain infectious diseases, including HIV, the virus that causes AIDS. FDA’s policy is intended to protect all people who receive blood transfusions from an increased risk of exposure to potentially infected blood and blood products. The deferral for men who have had sex with men is based on the following considerations regarding risk of HIV: Men who have had sex with men since 1977 have an HIV prevalence (the total number of cases of a disease that are present in a population at a specific point in time) 60 times higher than the general population, 800 times higher than first time blood donors and 8000 times higher than repeat blood donors (American Red Cross). Even taking into account that 75% of HIV infected men who have sex with men already know they are HIV positive and would be unlikely to donate blood, the HIV prevalence in potential donors with history of male sex with ma
