Figure 6: Of the acute HCV cases with known risk factor information, injection drug use (IDU) is associated with 63% of infections, 9% drug snorting, 14% sexual contact, 2% health care acquired (including blood transfusion, receipt of blood product, hemodialysis, surgery, and dental surgery), and 8% other (including occupational exposure to blood, household contact with hepatitis C carriers, incarceration without other risk factors).