Rate of viral rebound according to specific drugs in the regimen in 2120 patients with HIV suppression.

Background: It is currently unclear whether the tendency for viral rebound in patients with viral load < 50 copies/ml differs according to the specific drug regimen being used.

Methods: To follow 2120 patients in EuroSIDA who had attained < 50 copies/ml on highly active antiretroviral therapy (HAART), without previously virologically failing HAART.

Results: The rate of viral rebound (two consecutive values > 400 copies/ml) was 4.