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" A systematic review and meta-analysis that focused on male circumcision and heterosexual transmission of HIV in Africa was published in 2000.12 It included 19 cross-sectional studies, 5 case-control studies, 3 cohort studies, and 1 partner study. A substantial protective effect of male circumcision on risk for HIV infection was noted, along with a reduced risk for genital ulcer disease. After adjustment for confounding factors in the population-based studies, the relative risk for HIV infection was 44% lower in circumcised men. The strongest association was seen in men at high risk, such as patients at STD clinics, for whom the adjusted relative risk was 71% lower for circumcised men. "
http://www.cdc.gov/hiv/prevention/re...ecircumcision/
Enjoy your STDs.
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