http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3331688/
"Although American men are circumcised at high rates, European men are not, such that the dearth of a marked heterosexual epidemic in both North America and Europe suggests, at least, that circumcision status has not been a dominant factor in predicting heterosexual spread in the northern hemisphere."
food for thought: america has a higher rate of infection than most wealthy nations even though we circumcise a lot more than they do.
http://www.aidsmeds.com/articles/1667_23371.shtml
"Despite spending more per capita on health care than any other nation, the United States ranked as the worst in nine major health areas, including: HIV/AIDS prevalence"