One in 25 baby boomers (people born between 1945 and '65) test positive for hepatitis C. It's the most common chronic blood-borne pathogen and the most common cause of chronic liver disease or liver cancer. Once you've contracted it, it doesn't go away. Dr. Kirtly Parker Jones explains why baby boomers are more likely to have hepatitis C than other age groups and why you should get a screening if you're a boomer.