Primary and early HIV infection represents a potentially unique opportunity to better understand the pathogenesis of HIV infection, as well as to potentially prevent the establishment of latent infection. Approved antiretroviral therapy is able to reduce plasma viremia to unmeasurable levels in established infection and several groups have observed comparable effects in recently infected adults. This study is designed to evaluate and follow a cohort of patients with primary or early HIV infection and to evaluate the time course of latent infection and whether latent infection in CD4 cells will allow viral persistence despite antiretroviral therapy.