Overall, 3485 newly admitted male inmates participated in the study, from whom 5.2% (n = 182) tested positive for HCV antibody. The prevalence of HCV RNA among all inmates was 3.4% (n = 117), indicating a viremic rate of 64% (n = 117/182) in this prison. The most frequent genotypes were 3a and 1a with 52% (n = 61) and 44% (n = 51), respectively; other genotypes included 1b (3%, n = 4) and 3 h (1%, n = 1).
Questionnaire data were available for half of the participants with positive HCV RNA (n = 60). The median age was 38 years (interquartile range (IQR): 34–44 years); the majority were heterosexual (91%), and had a drug-related sentence (73%). History of the previous incarceration was reported in 63%, and the mean (SD) incarceration time in the last year was 92 (147) days.
The majority had not finished high school (82%), were not currently employed (63%), had a minimum wage monthly income or below (65%), and all had a history of drug use (100%). During the last six months, one-quarter of patients had unstable housing (25%), the majority had lived more than half of this time with people who inject drugs (PWID) (53%), and more than half of their friends were current drug users (67%). Compared to all patients, those who attended SVR testing appointments were older, had higher education, monthly income, and employment, and a lower proportion of them had a history of incarceration and drug-related sentences (Table 1).
Table 1
Characteristics of Karaj prison participants with positive HCV RNA testing
| Total | People who achieved SVR |
Characteristics, n % | n = 60 | n = 23 |
Age, median (IQR) | 38 (34, 44) | 39 (34, 45) |
Male sex | 60 (100%) | 23 (100%) |
Drug-related sentences | 38 (73.1%) | 13 (61.9%) |
History of incarceration | 19 (63.3%) | 7 (53.8%) |
Mean incarceration days† (SD) | 92 (147) | 114 (158) |
Sexual orientation | | |
Heterosexual | 53 (91.4%) | 20 (95.2%) |
Homo/bisexual | 5 (8.6%) | 1 (4.8%) |
Education | | |
Did not finish high school | 49 (81.7%) | 16 (69.6%) |
Finished high school | 10 (16.7%) | 7 (30.4%) |
Higher education | 1 (1.7%) | 0 (0.0%) |
Employment | | |
Unemployed | 38 (63.3%) | 8 (44.4%) |
Part-time | 13 (21.7%) | 6 (33.3%) |
Full-time | 9 (15.0%) | 4 (22.2%) |
Monthly income | | |
Minimum wage or below | 39 (65.0%) | 14 (60.9%) |
Living wage | 10 (16.7%) | 5 (21.7%) |
Above living wage | 11 (18.3%) | 4 (17.4%) |
Place of residence | | |
Own house | 4 (8.9%) | 2 (10.5%) |
Rental/Parents house | 30 (66.7%) | 13 (68.4%) |
Homeless | 11 (24.4%) | 4 (21.1%) |
Number of housings within 6 months | | |
One | 43 (72.9%) | 16 (72.7%) |
Two or more | 15 (25.4%) | 6 (27.3%) |
Lived with PWID‡ within 6 months | | |
Never | 23 (40.4%) | 10 (45.5%) |
Less than half the time | 4 (7.0%) | 0 (0.0%) |
Half the time or more | 30 (52.6%) | 12 (54.6%) |
Number of friends with drug use | | |
None | 10 (18.2%) | 3 (14.3%) |
Less than half | 8 (14.6%) | 4 (19.1%) |
Half or more | 37 (67.3%) | 14 (66.7%) |
Feeling of anxiety or depression | 46 (79.3%) | 16 (72.7%) |
Sense of well-being§, mean (SD) | 63 (19) | 68 (21) |
†in the previous year ‡people who inject drugs §in a scale from zero to one hundred |
Drug Use Patterns
The median age at first drug use was 18 (IQR: 15–22 years), and the majority had a history of use in the last six months (67%). From people who reported drug use in the previous month (42%, n = 24/57), 79% had used daily, most commonly Heroine and/or Methamphetamine (75%). Overall, 48% (28/59) had a history of injection; the median age at first injection was 20 (IQR: 18–25 years), 25% (n = 7/28) had injected within the last six months and 14% (n = 4/28) within the previous month. From people with recent injection (past month), the majority had daily injection (75%), all Heroine (100%), and had shared needles or syringes (75%). People who attended SVR appointments were less likely to had injected within the last six months (9% vs. 25%) and shared needles or syringes within the previous month (75% vs. 0%), compared to all patients (Table 2).
Table 2
Drug use patterns and HCV care history among Karaj prison participants with positive HCV RNA
| Total | People who achieved SVR |
Characteristics, n % | n = 60 | n = 23 |
Drug use, ever | 57 (100%) | 22 (100%) |
Age at first drug use, median (IQR) | 18 (15, 22) | 18 (16, 20) |
Drug use within 6 months | 38 (66.7%) | 16 (69.6%) |
Drug use in the last month | 24 (42.1%) | 9 (39.1%) |
Daily use | 19 (79.2%) | 7 (77.8%) |
Most commonly used drugs | | |
Heroine and/or Methamphetamine | 18 (75.0%) | 8 (88.9%) |
Methadone | 6 (25.0%) | 1 (11.1%) |
Injecting drug use, ever | 28 (47.5%) | 11 (50.0%) |
Age at first injection | 20 (18, 25) | 20 (18, 27) |
Injection within 6 months | 7 (25.0%) | 1 (9.1%) |
Injection within the last month | 4 (14.3%) | 1 (9.1%) |
Daily injection | 3 (75.0%) | 1 (100%) |
Most commonly injected Heroine | 3 (100%) | 1 (100%) |
Shared needle or syringe | 3 (75.0%) | 0 (0.0%) |
Smoking daily, current | 50 (87.7%) | 18 (78.3%) |
Alcohol use, ever | 10 (18.9%) | 5 (23.8%) |
Opioid agonist therapy (OAT) | | |
Current | 29 (55.8%) | 10 (50.0%) |
History, not current | 17 (32.7%) | 7 (35.0%) |
Never | 6 (11.5%) | 3 (15.0%) |
HCV knowledge† | 4 (6.7%) | 2 (8.7%) |
HCV screening, ever | 10 (16.7%) | 4 (17.4%) |
HCV treatment uptake, ever | 3 (5.0%) | 1 (5.3%) |
Willingness to receive HCV treatment | 53 (93.0%) | 19 (90.5%) |
†answered three out of five questions correctly |
History Of Hcv Care And Knowledge
History of HCV screening (antibody testing) and treatment uptake was 17% (n = 10/60) and 5% (n = 3/60), respectively. Out of five questions around HCV knowledge, 7% (n = 4/60) answered three or more questions accurately. The majority had a strong willingness to receive HCV treatment (93%, n = 53/57) (Table 2).
Hcv Treatment And Linkage To Care
One patient did not meet the criteria for treatment in prison due to concurrent HIV antiretroviral therapy. From 116 patients who were eligible for initiating treatment -all were candidates for a 12-weeks DAA therapy- 24% (n = 28) were released and 72% (n = 83) initiated treatment in prison, including one individual who was released before treatment uptake and reincarcerated. Information on the treatment status of 5 other patients remains unknown.
From patients who received treatment in prison, 81% (n = 67/83) completed their course in prison and the rest were released. From those who were released during treatment, 63% (n = 10/16) were followed by the network and the majority completed treatment (90%, n = 9/10). Among patients who were released before treatment initiation, 71% (n = 20/28) were linked to HCV care in the network, and the remaining were lost to follow-up. Among those who initiated treatment in the network, 60% (n = 12/20) completed therapy and the rest discontinued treatment for unspecified reasons. Therefore, among people who were released before or during treatment, 68% (n = 30/44) were successfully followed and linked to care in the community and 70% (n = 21/30) completed treatment (Fig. 1).
Overall, a total number of 103 patients initiated treatment in prison or network, resulting in treatment uptake of 89% (n = 103/116). From this proportion, 85% (n = 88/103) completed treatment in prison or network. Forty-three percent (n = 38/88) of patients who had completed treatment were available for SVR assessment, who all had cured (SVR = 100%). People who initiated treatment in the community had a higher ITT SVR compared to those who initiated in prison (45% (n = 9/20) vs. 35% (n = 29/83)). Similarly, mITT SVR for patients who completed treatment in the community was higher compared to those who completed in prison (57% (n = 12/21) vs. 39% (n = 26/67)) (Fig. 2).