Comparisons of the changes of CD4 cell count and HIV-1 viral loads after the first clinical visit among the following four groups of treatment naïve patients.

<p>Men who have sex with men (MSM, 357 patients for CD4 cell count and 371 patients for viral loads analysis) vs. injection drug users (IDUs, 129 patients for CD4 cell count and 128 patients for viral loads analysis) (Fig. 1A and 1B); patients infected with CRF07_BC vs. infected with subtype B (Figs. 1C and 1D). A generalized estimating equation model was used for the analyses.