And you’re three for three:

In 2014, gay, bisexual, and other men who have sex with men accounted for 83% of primary and secondary syphilis cases where sex of sex partner was known in the United States

And:

The 2015 statistics represent a small decrease (3%) when compared to 2014. This is primarily due to falls in diagnoses for chlamydia (4%) and genital warts (7%).

However, in the same period there were large increases in diagnoses of gonorrhoea (11%) and syphilis (20%), continuing the rising trends in these infections of the past 5 years. These rises have occurred mostly in gay, bisexual or other men who have sex with men.