Atazanavir/Ritonavir Maintenance Therapy

Long-term side effects, the expense of medications, and the difficulty of taking medications continuously for long periods of time are all problems with complicated anti-HIV drug regimens. The purpose of this study is to determine whether two drugs, atazanavir (ATV) and ritonavir (RTV), will control HIV infection when taken together without any other anti-HIV drugs after 48 weeks of viral suppression. Hypothesis: Simplified maintenance therapy with ATV and RTV alone after virologic suppression does not markedly increase the risk of virologic failure.