Two large clinical trials in East Africa show that being circumcised halves a man’s risk of contracting HIV infection. The finding mirrors the results of a recent South African study (SN: 10/29/05, p. 275: Defense Mechanism: Circumcision averts some HIV infections).
Combined, the reports offer definitive evidence that circumcision confers strong—though not complete—protection against infection by the virus, says Anthony S.
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