For the purpose of this study, a patient is defined as having symptomatic HIV infection if he or she has a history of or has active thrush (oral candidiasis); a history of or active oral hairy leukoplakia; herpes zoster within the last 3 years; recurrent seborrheic dermatitis or puritic folliculitis; weight loss of 4.5 kg or 10 percent of body weight not caused by dieting; unexplained intermittent diarrhea (2 or more liquid stools per day) within the last 4 months; night sweats; mild cognitive impairment; or fatigue interfering with activity within the past 6 months.