HIV Transmission: A “Low Risk” Self-assessment May Be Inaccurate —In this study, 4 out of 5 men who have sex with men and consider themselves at low risk for HIV infection actually engaged ...

Circumcision appears to reduce STD risk. By Reuters. August 9, 2007 9:10 PM UTC ... The presence of a sexually transmitted infection between 18 and 25 years of age was determined by questionnaire.