[The evolution of non-A, non-B hepatitis: hepatitis C and hepatitis E].
The nosological evolution of non-A, non-B hepatitis is synthetically reviewed. After the initially complete silence from the epidemiological and diagnostic points of view, much research has been devoted to this pathology and has already yielded a number of new acquisitions even beyond simple HCV and HEV hepatitis. The problems connected with this pathology are a direct concern of medical practice in view of its frequency in the population and of its prevention where much progress has already been made.