| HIV-1 | Human immunodeficiency virus Type 1 |
| CRF | Circulating recombinant forms |
| URFs | Unique recombinant forms |
| ART | Antiretroviral therapy |
| RT-PCR | Reverse transcription polymerase chain reaction |
| PR | Protease |
| IN | Integrase |
| RT | Reverse transcriptase |
| HIVdb | HIV Drug Resistance Database |
| CDC | Centers for Disease Control and Prevention |
| MSM | Men who have Sex with Men |
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