PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0 or 1 Life expectancy: At least 4 months Hematopoietic: Absolute granulocyte count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 2 mg/dL AST or ALT no greater than 3 times normal No evidence of hepatic failure No active hepatitis Renal: Creatinine clearance at least 40 mL/min Cardiovascular: No myocardial infarction within 6 months No decompensating congestive heart failure No unstable angina No current symptomatic arrhythmia Other: No known HIV antibody No thyroid abnormality uncontrollable by medication No medical, sociological, or psychological impediment to study compliance No pre-existing psychiatric condition (especially depression) or history of severe psychiatric disorder No autoimmune disease (e.g., systemic lupus erythematosus, multiple sclerosis, ankylosing spondylitis) No concurrent malignancy except nonmelanomatous skin cancer Not pregnant or nursing Negative pregnancy test Effective contraception required of fertile women No history of egg allergies