Truvada prevents contracting HIV but media downplays it. I find that strange.

Here is where you can learn about Truvada:

http://mediamatters.org/blog/2014/05/19/media-out … aid/199375

Some guys I have met on this site and elsewhere also didn't know there are anti-viral shots to prevent Hepatitis B. Here is where you can see the various meds for this:

http://www.drugs.com/condition/hepatitis-b-prophy … laxis.html