Profile of participant sites
| Site | Location | Type of site | Number of clients (HCV infected%) | Staff on site | Methadone dispensed on site |
| 1 | Waterford | DTC | 100 (15) | GP Nurse specialists Psychiatrists | N |
| 2 | Dublin | Hostel | 80 (30) | GP Nurse | N |
| 3 | Dublin | DTC | 500 (approximately 75) | GP Nurse specialists Pharmacists Counsellors Housing workers Psychiatrists | Y |
| 4 | Dublin | DTC | 200 (75) | GP Nurse specialists Pharmacists Counsellors Housing workers | Y |
DTC, drug treatment centres; GP, general practitioner; HCV, hepatitis C virus.