Dosages regimes varied from 80 to 180 lg/week, depending on type of peginterferon, in combination with ribavirin (800-1,200 mg/day). Onset of symptoms of interstitial pneumonitis ranged from 23 days to 10 months of therapy. Four patients recovered and one patient died after drug-induced pneumonitis; outcomes of the remaining patients were not described. There was no description on treatment regimen for pneumonitis.