- 1. Weight loss in excess of 15 lbs. or 10 percent of body weight noted in a 2-year period prior to entry into the study. 2. Temperature greater than 38.5 degrees C with or without night sweats, persisting for more than 14 consecutive days or more than 15 days in a 30-day interval during a 2-year period prior to entry into the study. 3. Diarrhea defined as = or > 3 liquid stools per day, persisting for more than 30 days during a 2-year period prior to entry into the study without a definable cause. 4. Herpes zoster during the past 2 years. 5. Oral candidiasis or biopsy-proven hairy leukoplakia during the last 2 years. 6. Active substance abuse.