The odds are higher that you’ll get hepatitis C if you:
Had a blood transfusion before 1990. A screening test for HCV went into use that year. Before then, this was the main cause of most new cases in the U.S.
Use needles to take illegal drugs. This is one of the most common ways to get hep C. Up to 80% of new users get the disease within 6 to 12 months.
Snort cocaine. People who share straws or other tools to inhale this drug raise their risk.