There is increasing data on the potential for inhibition of immune activation as primary therapy for HIV infection. The rationale of CsA therapy is to decrease T cell activation in patients with early HIV infection. Activation of T cells leads to translation and transcription of provirus, release of viral progeny, and ultimately cell death. T cell activation also leads to increased cell death via apoptosis. CsA is capable of inhibiting both these events and thus may lead to decreased CD4 cell turnover.