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Epidemiological studies have been conducted to investigate the relationship between male circumcision and HIV infection. The WHO and the Joint United Nations Programme on HIV/AIDS (UNAIDS) stated that male circumcision is an efficacious intervention for HIV prevention but should be carried out by well trained medical professionals and under conditions of informed consent (parents consent for their infant boys).〔 〕〔 〕〔(【引用サイトリンク】publisher=World Health Organisation )〕 The CDC states that circumcision reduces the risk that a man will acquire HIV and other STDs from an infected female partner. A meta-analysis of data from fifteen observational studies of men who have sex with men found "insufficient evidence that male circumcision protects against HIV infection or other STIs."〔 The CDC concludes "There are as yet no convincing data to help determine whether male circumcision will have any effect on HIV risk for men who engage in anal sex with either a female or male partner, as either the insertive or receptive partner." 〔 == Men who have sex with men == A 2008 meta-analysis of 53,567 gay and bisexual men (52% circumcised) found that the rate of HIV infection was non-significantly lower among men who were circumcised compared with those who were uncircumcised. For men who engaged primarily in insertive anal sex, a protective effect was observed, but it too was not statistically significant. Observational studies included in the meta-analysis that were conducted prior to the introduction of highly active antiretroviral therapy in 1996 demonstrated a statistically significant protective effect for circumcised MSM against HIV infection.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Circumcision and HIV」の詳細全文を読む スポンサード リンク
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