Rich Kids Don't Get STDs

There's a site popular among undergrads at Harvard called HarvardFML. The site is reminiscent of a site that was popular at my undergrad, the Anonymous Confession Board. Basically, the premise is you post shit anonymously and thus--seemingly--without consequences. Anyway, since I work with undergrads here, I for whatever reason think it's important to keep somewhat informed about the goings-on on campus. Now, I could probably do this more effectively if I took the time to read their newspaper or go to events on campus but I prefer to do it the lazy way and read anonymous whining about their life on HarvardFML. This morning I read quite a gem:

I figure the chances of catching an STD from another Harvard student are pretty low, so I usually don’t make the guys I hook up with wear a condom. I just found out that I have chlamydia…again. FML

Which, naturally, made me wonder where these kids think STDs come from if--as a Harvard student--you think Harvard students wouldn't be carrying them around. Is this an admissions question I don't know about? I guess the most basic conclusion is that the underlying assumption here is that only poor, uneducated people traffic disease? And that this individual thinks the predominately wealthy, educated elite would never soil themselves with sexual contact with the underclass?

Mind you, these kids go to Harvard. Future leaders of the world and all that jazz.