The Natural History of Hepatitis C Virus Infection and Disease in the Era of Curative Therapy with Direct-Acting Antivirals.

The availability of highly effective direct-acting antivirals (DAAs) that cure individuals infected with HCV has changed completely the natural history of HCV infection and chronic hepatitis C. In sustained responders to DAAs, the most common clinical-pathologic outcome has become liver disease regression, cirrhosis re-compensation, and the de-listing of transplant candidates. However, careful scrutiny of liver disease cofactors and outcome predictors in treated patients is mandatory for an appropriate personalized surveillance of the residual risk for hepatocellular carcinoma. Since successful treatment with DAAs does not confer protective immunity against HCV reinfection, an effective vaccine is critically needed to control HCV infection. Meanwhile, it is mandatory to enhance universal access to DAAs, to test asymptomatic high-risk groups who are the main source of transmission, and to screen people who inject drugs (PWID), men who have sex with men (MSM), and sex workers, and to assure safe medical procedures with the provision of disposable needle and syringes.