Epidemic data for fitting

1. Incidence trend scaling fitted as a multiplier for probability of infection

2. Fitting points

• 50% of current PWID are chronically infected with HCV in 2016
• 45% of current and former chronically infected with HCV are in stages F0 & F1 in 2016

3. Scaling to a population

• In 2016 there were 540,000 HCV infected current PWID
• In 2016 there were 1,380,000 HCV infected former PWID