According to officials from the National Institutes of Health, circumcision reduces the risk in men of contracting HIV through heterosexual sex by roughly 50%. The announcement was based on several recent studies conducted in Africa.
New York Times:
The two trials, conducted by researchers from universities in Illinois, Maryland, Canada, Uganda and Kenya, involved nearly 3,000 heterosexual men in Kisumu, Kenya, and nearly 5,000 in Rakai, Uganda. None were infected with H.I.V. They were divided into circumcised and uncircumcised groups, given safe sex advice (although many presumably did not take it), and retested regularly.
The trials were stopped this week by the N.I.H. Data Safety and Monitoring Board after data showed that the Kenyan men had a 53 percent reduction in new H.I.V. infection. Twenty-two of the 1,393 circumcised men in that study caught the disease, compared with 47 of the 1,391 uncircumcised men.
In Uganda, the reduction was 48 percent.
Those results echo the finding of a trial completed last year in Orange Farm, a township in South Africa, financed by the French government, which demonstrated a reduction of 60 percent among circumcised men.
The two largest agencies dedicated to fighting AIDS said they would now be willing to pay for circumcisions, which they have not before because there was too little evidence that it worked.
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