The "Talk" - Moms with 12 year old boys

So it's super hush hush right now but apparently there is a Chlamydia out break at my son's middle school. It's confined to the 8th grade class but I feel like I want to talk to my nerdy little 12 year old sooner rather than later. How did ya'll handle the talk? My son is "neurospicy" and more into video games, books, transformers, and legos but I feel like I need to prepare him now.

I guess I'm just floundering a little bit on how to handle it. He's super easily embarrassed and definitely over-anxious on a good day. I want to be able to be open and honest with him in a way that he knows that he can come and talk to me about anything or with any questions.