CDC's new tool in HIV prevention: social media and Jamie Foxx

The Centers for Disease Control and Prevention is jumping on the social media bandwagon and enlisting some help from celebrities Jamie Foxx and Ludacris to promote an HIV/AIDS awareness campaign targeting African Americans.

Called, "i know," the campaign uses a website, Twitter, Facebook, texting and a PSA from celebs (check out Jamie Foxx below) in an effort to increase dialogue and reduce the stigma of the disease among young African Americans -- a very vulnerable population. While blacks make up 14 percent of the population of 13- to 29-year-olds, they account for half of all new HIV infections of this group, according to the CDC.