Table 3.
Incidence of HCV reinfection among participants treated for recent HCV infection
| Participant type | Cases of reinfection (n) | Participants at risk (n) | Person years follow-up | Incidence/100 person-years | 95% CI |
|---|---|---|---|---|---|
| Overall | |||||
| Confirmed/possible reinfection | 10 | 120 | 135 | 7.4 | 4.0, 13.8 |
| Confirmed reinfection | 8 | 120 | 135 | 5.9 | 3.0, 11.9 |
| Confirmed persistent reinfection | 5 | 120 | 135 | 3.7 | 1.5, 8.9 |
| HCV mono-infection | |||||
| Confirmed/possible reinfection | 3 | 56 | 67 | 4.5 | 1.4, 13.9 |
| Confirmed reinfection | 2 | 56 | 67 | 3.0 | 0.7, 11.9 |
| Confirmed persistent reinfection | 1 | 56 | 67 | 1.5 | 0.2, 10.6 |
| HIV/HCV co-infection# | |||||
| Confirmed/possible reinfection | 7 | 64 | 68 | 10.3 | 4.9, 21.7 |
| Confirmed reinfection | 6 | 64 | 68 | 8.9 | 4.0, 19.7 |
| Confirmed persistent reinfection | 4 | 64 | 68 | 5.9 | 2.2, 15.7 |
| IDU ever | |||||
| Confirmed/possible reinfection | 8 | 84 | 94 | 8.5 | 4.2, 16.9 |
| Confirmed reinfection | 6 | 84 | 94 | 6.4 | 2.9, 14.1 |
| Confirmed persistent reinfection | 4 | 84 | 94 | 4.2 | 1.6, 11.3 |
| IDU never | |||||
| Confirmed/possible reinfection | 2 | 36 | 41 | 4.9 | 1.2, 19.8 |
| Confirmed reinfection | 2 | 36 | 41 | 4.9 | 1.2, 19.8 |
| Confirmed persistent reinfection | 1 | 36 | 41 | 2.5 | 0.3, 17.5 |
| IDU at end of and/or post-treatment | |||||
| Confirmed/possible reinfection | 8 | 45* | 52 | 15.3 | 7.7, 30.6 |
| Confirmed reinfection | 6 | 45* | 52 | 11.5 | 5.2, 25.5 |
| Confirmed persistent reinfection | 4 | 45* | 52 | 7.7 | 2.9, 20.4 |
| No IDU at end of and/or post-treatment | |||||
| Confirmed/possible reinfection | 2 | 72* | 77 | 2.6 | 0.7, 10.4 |
| Confirmed reinfection | 2 | 72* | 77 | 2.6 | 0.7, 10.4 |
| Confirmed persistent reinfection | 1 | 72* | 77 | 1.3 | 0.2, 9.2 |
#
All participants with HIV/HCV are HIV-positive MSM
*
Numbers do not equal 120 due to missing data on injecting during follow-up in 3 participants
Abbreviations: Confidence interval (CI)