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Although the initiation of antiretroviral therapy (ART) has promoted the reconstitution of CD4+ T-cell count in the HIV infected population, not all patients can achieve the normalization of their immunologic functions. We analysed the variables associated with immunologic recovery, which is commonly regarded as the increase of CD4 to 350 cell/μL after a year of ART. We collected data from 3,485 patients attending a university-based HIV clinic from June 2005 to July 2014 in Shanghai, China. Logistic regression test was performed to analyse the risk factors for suboptimal CD4+ recovery following yearlong ART. The CD4+ T-cell of 723 participants (41.5% of the 1744 subjects) showed more than 350 cell/μL after one year of ART. Compared with baseline CD4 &gt; 350 cell/μL, patients with baseline CD4 ≤ 200 cell/μL or 200 &lt; CD4 ≤ 350 cell/μL were 42.6, 4.5 times more likely to be incomplete CD4 recovery, respectively. The risk of suboptimal immunologic recovery among patients with regimen including AZT or d4T were 2.1, 2.4 times higher compared with TDF, respectively. In our study, between optimal CD4 recovery group and suboptimal recovery group, there were no significant differences in age, gender, marital status, transmission routes, WHO stage, and CD4 recovery rates. As for the dynamic CD4 change, we found the CD4 recovery rates were 49.9% and 61.8% in the second and third year of ART, respectively. Patients who had a low level of CD4+ T-cell count (&lt; 200 cell/μL) during the initiation of ART exhibited more difficulties recovering to a normal level. Furthermore, the regimen, including AZT or d4T, was not beneficial to CD4 recovery. So, more efforts should be made to guarantee the early diagnosis and timely treatment for HIV/AIDS patients, and simultaneously optimize antiretroviral therapy.

The risk factors for suboptimal CD4 recovery in HIV infected population: an observational and retrospective study in Shanghai, China