A new study found that one in every 33 baby boomers has the Hepatitis C virus, and many don’t know it. In fact, Hepatitis C is now killing more people than AIDS. Robert Bettiker, infectious diseases specialist at Temple, says if you had a blood transfusion before 1990 (when routine screening for hepatitis C began) or have ever used intravenous drugs, you should tell your doctor. A blood test can determine if you’ve been exposed, and early treatment could be effective.