Experts presume that if no viruses are detectable in the blood over a sustained period after treatment , the risk of secondary disease is definitely reduced. There are six different primary types of the hepatitis C virus, which are subdivided into more than 60 subtypes. The potency of different drugs isn’t the same against all viruses. Evaluation with dual therapy or triple therapy Depending on the type of virus, the scientific picture and the course of the disease, daclatasvir is used in dual therapy together with the virostatic drug sofosbuvir, in triple therapy with the virostatic medications ribavirin and sofosbuvir, or in triple therapy with peginterferon alfa to improve the immune system and ribavirin.All the authors were involved in all levels of manuscript advancement and vouch for the completeness and accuracy of the info. The first draft was cowritten by the initial and last authors , with assistance from a medical-communications agency paid by the sponsor. The scholarly research was conducted in accordance with the study protocol, which is offered by NEJM.org. Key exclusion requirements were progressive types of multiple sclerosis,11 additional clinically significant illness, prespecified laboratory abnormalities, and prior contact with glatiramer acetate or contraindicated medicines . Sufferers were informed of approved therapies12 for multiple sclerosis, and they provided written informed consent.