http://www.cbsnews.com/news/circumcision-rates-declining-health-risks-rising-study-says/
Well, that single google search didn't go quite as I thought it would.
The 1989 study by Wiswell that those numbers are drawn from is heavily disputed.
- It failed to account for any other factors, such as maternal infection and high or low birthweight.
- The study was retrospective and only included sick and hospitalized babies
- The parents may have been instructed to retract the foreskin
- Their method to test for UTIs has a false-positive rate of about 15%
- It wasn't recorded whether the mother breastfeed or not, which reduces the risk of UTIs
In fact, none of their studies included a control group of infants where the foreskin was left alone
Rates in Europe are vastly lower in uncircumcised boys, pointing to a different cause. One of which might be the force-able retraction by ignorant doctors, which would introduce the bacteria.