Hepatitis C is a viral infection that is usually spread through contact with infected blood. Prior to 1992, when testing of donated blood and organs became commonplace, many people were infected through blood transfusion and organ transplants. Now the most common method of infection is the sharing of needles or other equipment for injecting drugs. About 3.2 million people are estimated to have chronic hepatitis C infection in the U.S. Over decades, chronic infection can lead to liver failure a...