Male circumcision reduces the risk of human immunodeficiency virus (HIV) transmission from HIV positive women to men in high risk populations.[1][2]
In 2020, the World Health Organization (WHO) reiterated that male circumcision is an efficacious intervention for HIV prevention if carried out by medical professionals under safe conditions.[3] Circumcision reduces the risk that a man will acquire HIV and other sexually transmitted infections (STIs) from an infected female partner through vaginal sex.[4] The evidence regarding whether circumcision helps prevent HIV is not as clear among men who have sex with men (MSM).[3] The effectiveness of using circumcision to prevent HIV in the developed world is not determined.[3][5]
There is disputed immunological evidence in support of MC in preventing the heterosexual acquisition of HIV-1.
This led to a [medical] consensus that male circumcision should be a priority for HIV prevention in countries and regions with heterosexual epidemics and high HIV and low male circumcision prevalence.
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