The antivirus drug Erribabirina generates a large number of mutations and produces a "genetic dissolution" of viruses. Research on the effect of ribavirin will serve to design more efficient antivirus drugs. Ribavirin acts against viruses that use RNA as genetic material. Among other things, hepatitis C and Lassa fever are used in diseases. However, for the moment, only 30 to 40% of patients with hepatitis C get cured.