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Meta-analysis: HIV acquisition in MSM, all studies. Forest plot of the meta-analysis of HIV incidence in all MSM trials, PrEP versus placebo or no drug. Subgroups include high (≥80%) adherence and low (<80%) adherence. ‘Events’ refers to new HIV infections and ‘total’ refers to total person-years at risk during the study period. MSM, men who have sex with men; PrEP, pre-exposure prophylaxis; RR, rate ratio.
