The problem with behavioral research done in Uganda is that it really only applies to Uganda. In a land where unprotected sex and STD infection is out of control, circumcision seems to help protect men. Doctors are stumped as to what it is about the modified penis that adds the additional protection, but statistics don't lie. Right?
It is my understanding that these studies do not count sexual partners or encounters, they merely have follow-ups with men who chose to get the circumcision procedure done. Far from being an in depth behavioral study, they don't explore any of the cultural or social consequences of having a circumcised penis in a largely uncircumcised nation. Scientists just checked in a few years later and did some blood work.
Now these studies are being quoted in an effort to influence US policies. It's so-so science being applied idiotically.