HIV AND AIDS in the United States.
Teens and young adults continue to be at risk, with those under 35 accounting for 56% of new HIV infections in 2010 (those ages 13-24 accounted for 26% and those ages 25-34 accounted for 31%).4 Most young people are infected sexually.17 . . .
Younger MSM [“men who have sex with men”] (ages 13-24) [wait, 13-year-olds are “men”?] are at particular risk. In 2010, this group accounted for 1 in 5 (19%) of all new HIV infections and 30% of new infections among all MSM. Among Black MSM, this age group accounted for 45% of new infections.4
So of all new infections for people aged 13 to 24, over two-thirds are males infected by other males. I didn’t find, in my quick glance through a couple of cited sources, an age breakdown that identifies numbers for underage (not yet 18) males, though I did come across this: For males aged 13 to 19, 92.8% transmitted via “male-to-male sexual contact,” and another 2.1% via that and injection drug use. (See page 7 of CDC Slide Set: HIV Surveillance in Adolescents and Young Adults [PDF].) So, either the under-18 infection rate for males is extremely small and consists entirely of shared needles, or a considerable number of boys are being preyed upon by a very small percentage of the population as a whole, namely, homosexual males.
Not that there’s anything wrong with that.
Earlier: Apple approves homosexual meetup app for users as young as 12.