I have just found out that my father who has finished his 12 weeks treatment (Sofosbuvir + Daclatasvir) about a month ago has had the virus relapse. It was undetectable in all previous tests, but the recent test showed it. I was wondering if anyone can point me to the right sources, perhaps specialists and experts we could contact as in Poland (where we live) there doesn't seem to be enough information. We are not sure what to do next... He has had this horrible virus for more than 10 years, we were so happy to have cured it! But refuse to lose hope and want to keep fighting! Ahy help will be much appreciated!