I have read that the odds of cure at 12 weeks SVR are 99.8% From the old interferon days that some doctors hang on to was 24 weeks was needed to say cured but many doctors today do agree with the current published information and feel SVR 12 is cured.
What small number of relapses at 24 weeks post have you seen? I have not seen any except one person whose lab it turned out had made an error.
Also from what I have read the belief of the medical community at present time is that a patient SVR 12 who later again tests positive for the hep c virus that would not be a relapse but rather a new infection.
I see that according to one source says, only 2 of 779 people who were SVR 12 failed to achieve SVR 24. That works out to 99.7%.
The nurse at the center where I've been treated says they've had just one person (out of hundreds they've treated) relapse after SVR 12.
But I read here at medhelp several people saying they've relapsed after SVR 12. Hector said he relapsed after 47 weeks.
Thank you for clarifying that. I thought he meant 47 weeks after the end of treatment.
So since I'm SVR 12 now, the chances are very high that I'm cured.
Like yourself, I failed previous treatments (once with interferon/ribivirin and once with peg-interferon/ribivirin) and I'm stage 4.
But these new drugs (I had 16 weeks of grazoprevir, MK8408, MK3682 + ribavirin) are not only more effective, the side effects are virtually non-existent, at least for me.