Hepatitis C is a contagious liver disease that can range from a mild illness lasting a few weeks to a serious lifelong condition. Acute hepatitis C occurs within the first 6 months of exposure and often leads to chronic infection. Chronic hepatitis C can last a lifetime and significantly damage the liver, possibly causing cirrhosis or liver cancer. The virus is primarily spread through contact with infected blood and affects an estimated 3.2 million Americans, with baby boomers most at risk. While treatment is very effective at clearing the virus, hepatitis C was responsible for over 350,000 deaths worldwide in recent years.