When you add in that most married men have girlfriends,
a major cause for the problem surfaces. Additionally...
Due to sex talk being taboo, it is the one factor that has put young women most at risk. Lack of information on sex and sexuality, lack of awareness on reproductive and sexual rights, and bad peer pressure all arise because of the lack of transparency and information.
Add into this the male demand for dry sex, a phenomenon all its own, and you get some idea of how much work the government has ahead of it to stem this disaster.
Simple solution stop having unprotected sex and stop the IV drug use. DUH!