However, it's not like we couldn't cure hepatitis C before, we could, but just not very well.
The old regimen was interferon + ribavirin. You had to take it for months and months and the interferon makes you feel like you have the flu (it also put the patient at risk of depression and suicide). The cure rate was ~50%.
With the new drugs you don't need to get interferon injections anymore. You just pop one pill a day and 12 weeks later there is a 95%+ likelihood that you've been cured of HCV.
It's a HUGE medical advance.