76% of newly HIV-infected SF MSM in 2014 bottomed w/o condoms w/ 1+ partners not perceived to be HIV-negative

Among San Francisco men who have sex with men (MSM) in 2014, 76% of newly HIV-infected MSM had condomless receptive anal sex with one or more partners not perceived to be HIV-negative. If all of these men had been on pre-exposure prophylaxis (PrEP), there would have been 70% fewer HIV-infections. (W. McFarland & E. Vittinghoff, CAPS/PRC affiliates)

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