ATLANTA: The Centers for Disease Control and Prevention (CDC) is launching a social media campaign called "i know," encouraging African-Americans aged 18 to 24 to talk more openly about HIV. Part of the CDC's five-year Act Against AIDS initiative, I know will launch at an event on March 4 at Clark Atlanta University featuring singer-songwriter Jeremih.

"We really want to begin a sustained dialogue within this target audience," said Booker Daniels, a CDC health communications specialist and project lead for I ...