Zidovudine in Persons with Asymptomatic HIV Infection and CD4+ Cell Counts Greater than 400 per Cubic Millimeter

Abstract
Zidovudine therapy is of benefit in the treatment of symptomatic and asymptomatic human immunodeficiency virus (HIV) infection in persons with CD4+ cell counts of less than 500 per cubic millimeter. The efficacy, safety, and duration of benefit of zidovudine in those with 500 or more CD4+ cells per cubic millimeter are uncertain.