An illness with a) discrete onset of symptoms and b) jaundice or elevated serum aminotransferase (ALT) levels
A case that meets the clinical case definition and is laboratory confirmed
A serologic test for immunoglobulin G (IgG) antibody to the recently described hepatitis C virus is available, and many cases of non-A, non-B hepatitis may be demonstrated to be due to infection with the hepatitis C virus. With this assay, however, a prolonged interval between onset of disease and detection of antibody may occur. Until a more specific test for acute hepatitis C becomes available, these cases should be reported as non-A, non-B hepatitis. Chronic carriage or chronic hepatitis should not be reported.