.5/µL vs. 201.5/µL), late initiation of HAART (56.4% vs. 56.0%), or antiretrovirals used. Cox-regression analysis (HR; 95%CI) did not show differences in TTF (0.89; 0.66-1.20), TFO (0.95; 0.66-1.36), or TVF (1.00; 0.57-1.78) between immigrants and autochthonous patients. Losses to follow-up were more frequent among immigrants (17.8% vs. 12.1; p=0.009). Sub-Saharan African patients and immigrant females had a significantly shorter TTF.