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| Patterns of URFs | Transmitting routes | Total | ||
| Sexual transmission | IDUs | Others | ||
| B′/C | 20(31.7%) | 19(30.2%) | 8(12.7%) | 47(74.6%) |
| B′/C/CRF01_AE | 12(19.0%) | 1(1.6%) | 3(4.8%) | 16(25.4%) |
| Total | 32(50.8%) | 20(31.7%) | 11(17.5%) | 63(100%) |
