CDC’s “Fact Sheet on Circumcision”

By Men's Activism News | Source | September 1, 2009

Fact sheet here (.pdf file). Excerpt:

'This fact sheet summarizes information in four areas of male circumcision: 1) male circumcision and risk for HIV transmission; 2) male circumcision and other health conditions; 3) risks associated with male circumcision; and 4) status of HIV infection and male circumcision in the United States.
...
Summary
Male circumcision has been associated with a lower risk for HIV infection in international observational studies and in three randomized controlled clinical trials. It is possible, but not yet adequately assessed, that male circumcision could reduce male-to-female transmission of HIV, although probably to a lesser extent than female-to-male transmission. Male circumcision has also been associated with a number of other health benefits. Although there are risks to male circumcision, serious complications are rare. Accordingly, male circumcision, together with other prevention interventions, could play an important role in HIV prevention in settings similar to those of the clinical trials [41, 42].'

Notice this document was updated in Feb. 2008. I await this year's update (assuming it happens) with 'bated breath.