In this Director's Briefing video, CDC Director Dr. Tom Frieden talks about the latest Vital Signs report on hepatitis C (www.cdc.gov/vitalsigns/) -- a leading cause of liver cancer. Although hepatitis C can be a serious disease, most people do not know they are infected. There are about three million Americans with hepatitis C, most of whom are baby boomers born from 1945 through 1965. A blood test can tell if a person has ever been infected with hepatitis C and more effective treatments are available. Comments on this video are allowed in accordance with our comment policy: http://www.cdc.gov/SocialMedia/Tools/CommentPolicy.html This video can also be viewed at http://streaming.cdc.gov/vod.php?id=302560417b7ce7b29c6edd1d0628b68720130502145318233