| Number of donations positive and percentage | ||||
---|---|---|---|---|---|
Age group | Total sample | HIV | Syphilis | HBsAg | HCV |
 |  | No. (%) | No. (%) | No. (%) | No. (%) |
≤20 | 4501 | 18 (0.4) | 6 (0.1) | 38 (0.8) | 9 (0.2) |
21-30 | 7217 | 22 (0.3) | 9 (0.1) | 55 (0.8) | 6 (0.1) |
31-40 | 5958 | 17 (0.3) | 26 (0.4) | 22 (0.4) | 4 (0.1) |
41-50 | 4171 | 12 (0.3) | 26 (0.6) | 19 (0.5) | 3 (0.1) |
≤51 |  | 6 (0.2) | 8 (0.3) | 6 (0.2) | 4 (0.1) |
Total | 24761 | 75 (0.3) | 75 (0.3) | 140 (0.6) | 26 (0.1) |