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Transmitted drug resistance (TDR) is an ongoing public health problem in HIV disease treatment. However, little is known about TDR among men who have sex with men (MSM) patients in China. In addition, TDR prevalence among patients with acute HIV infection (AHI) or early HIV infection (EHI) was believed higher than that of patients with chronic HIV infection (CHI), but as AHI is typically either unidentified or crudely defined in large populations, very few direct comparisons have been made. We did a retrospective analysis of TDR in 536 antiretroviral-naive MSM patients from our immunodeficiency clinics at You'an Hospital, Capital Medical University (CMU), in Beijing, China, 2008-2011. The cohort included 266 patients with AHI/EHI and 270 patients with CHI. We analyzed the subtype, estimated the TDR prevalence, and characterized the model of TDR and the predicted drug sensitivity. Additionally, we made a comparison of TDR between the patients with AHI/EHI and patients with CHI. Our results indicated that among the 536 patients, HIV-1 subtype CRF01_AE accounted for 52.1%, subtype B accounted for 24.8%, CRF07_BC/ CRF08_BC accounted for 21.6% (116/536), and 1.3% were denoted as unique recombinant forms (URFs). A total of 7.8% patients had one or more transmitted HIV-1 drug resistance mutations, representing 6.2% for PI-related mutations, 0.9% for NRTI-related mutations, and 1.7% for NNRTI-related mutations. Although patients with AHI/EHI had a higher TDR prevalence as compared to that of patients with CHI, the difference was not statistically significant. There was no significant difference in TDR model and predicted drug susceptibility between the two groups of patients either. This study provides important strategic information for public health planning by healthcare officials in China and warrants a comprehensive study with larger patient cohorts from various healthcare centers within China.

Transmitted Antiretroviral Drug Resistance in the Men Who Have Sex with Men HIV Patient Cohort, Beijing, China, 2008–2011