I think you put your finger on it. With a replication rate like that, the little horrors could go from a few stragglers to an invading horde in a matter of days - or even hours.
It looks like we're both going the same path. According to the EASL guidelines I should be taking 24 weeks of ribavirin, but opinion seems to be growing that ribavirin has big side effects but little effect on the virus. Since the last time I took it, it seemed to have no effect at all, I've decided to give it a miss this time, and just take sofosbuvir+ledipasvir.
Thanks for clearing that up. I've seen the term viral breakthrough in the literature and wondered if that was what I had. I think if I had been treated just with interferon+ribavirin I would have been a non-responder, but the addition of simeprevir made it look as if the therapy was working. Still, its all academic now.