- Patients found at screening to have a temperature > 38.5 degrees C should be evaluated for the possibility of an occult opportunistic or bacterial infection or neoplasm. If this complete evaluation reveals an infection, they can be entered. If this evaluation is unrevealing, they may be entered after evaluation is completed but while mycobacterial cultures are still pending. Patients with a history of unexplained temperatures > 38.5 degrees C should be evaluated as above and/or be afebrile (temperature < 38.0 degrees C) for 2 weeks prior to study entry.