Discussion of HIV status by serostatus and partnership sexual risk among internet-using MSM in the United States.

Men who have sex with men (MSM), particularly black MSM, are disproportionally infected with HIV. Little is known about how discussion of HIV status between partners varies among MSM by race/ethnicity and by HIV transmission risk. Among a national survey of 2031 MSM reporting 5410 partnerships, black MSM, especially black HIV-positive MSM, serodiscussed with unprotected anal intercourse partners less than did white MSM. Although non-black HIV-positive, non-black HIV-negative MSM, and black HIV-negative MSM were more likely to report serodiscussion with unprotected anal intercourse partners, black HIV-positive MSM were not. Differential serodiscussion may play a role in explaining the racial/ethnic disparity in HIV incidence.