The Centers for Disease Control and Prevention (CDC) estimates that HIV and early syphilis rates among MSM are >40 times higher than those among heterosexuals 4. population 1, but accounted for 59% of new HIV infections and 62% of cases of early syphilis in 2009 2, 3. MSM comprise approximately 2% of the U.S.
Sexually transmitted infections (STI) disproportionately affect men who have sex with men (MSM).
