Does research prove PrEP’s effict?

The iPrEx trial proved that PrEP reduces the risk of HIV infection among gay men, bisexual men, and transgender women.

Furthermore, the Partners PrEP, and TDF2 displayed a reduction in HIV infection among heterosexual men and women following PrEP administration. Moreover, The Bangkok Tenofovir Study showed that PrEP is effective in 74% of the cases in needle HIV transmission.

There are many ongoing studies examining other regimens for PrEP.