Some good literatures on this:
Cousien A, Tran VC, Deuffic-Burban S, Jauffret-Roustide M, Dhersin JS, Yazdanpanah Y. Dynamic modelling of hepatitis C virus transmission among people who inject drugs: a methodological review. J Viral Hepat. 2015 Mar;22(3):213-29. doi: 10.1111/jvh.12337. Epub 2014 Oct 1. PMID: 25270261.
Fraser H, Mukandavire C, Martin NK, Goldberg D, Palmateer N, Munro A, Taylor A, Hickman M, Hutchinson S, Vickerman P. Modelling the impact of a national scale-up of interventions on hepatitis C virus transmission among people who inject drugs in Scotland. Addiction. 2018 Nov;113(11):2118-2131. doi: 10.1111/add.14267. Epub 2018 Jul 10. PMID: 29781207; PMCID: PMC6250951.
Unfortunately I have not got access at the moment. I will try to see if I can later. Or if you can please share and we can discuss this online or onsite.