Gay and bisexual men will no longer be singled out in screening of potential blood donors, according to new guidance from the Food and Drug Administration. Instead, all potential donors will be asked individual risk-based questions, and those who acknowledge a new sexual partner or multiple partners within three months and anal sex will be deferred. Additionally, anyone on medications to prevent or treat HIV will be deferred as the medication may cause false-negative results on blood screening tests. In 1985, in response to the AIDS epidemic, men who had sex with men, even once, were indefinitely barred from donating blood. In 2015 that deferral was changed to 12 months, then in 2020 to three months. Ongoing monitoring over the years has showed no increased risk of HIV transmission via blood transfusions. The new screening protocols are aimed at increasing eligibility while maintaining a safe blood supply.