The criterion for a sustained virologic response was met in 68 of 73 patients ( 93 % ; 95 % confidence interval [ CI ] , 85 to 98 ) with HCV genotype 2 infection who were treated for 12 weeks and in 213 of 250 patients ( 85 % ; 95 % CI , 80 to 89 ) with HCV genotype 3 infection who were treated for 24 weeks .