Demographic and clinical characteristics of participants with acute HIV infection and seronegative controls.

aNo participants endorsed injection drug use.bMSM = Men who have sex with men.cSTI = sexually transmitted infectiondSyphilis (n = 2), gonorrhea (n = 1), Chlamydia trachomatis (n = 1), non-gonococcal urethritis (n = 1) and genital ulcer disease (n = 1). One female subject was diagnosed with concurrent bacterial vaginosus, pelvic inflammatory disease, trichomoniasis and genital ulcer disease.eViral Loads >750,000 copies/ml were included in the calculation of the medians as equal to 750,000 copies/ml unless sample was diluted and retested, in which case the true value was used.fOther diagnosis sites included student health and drug treatment program