The incidence of AIDS and related disorders continues to rise sharply these days and anesthesologists may expect to encounter such patients more and more frequently during the performance of routine procedures on the seemingly healthy and during indicated procedures on the sick. AIDS is a disease for which there is no cure, and thus prevention becomes even more important. However, the dangers of this disorder should not be exaggerated. We experienced one case of a subcutaneous injury during spinal anesthesia caused by a stylet of an infected asymptomatic carrier. Postexposure prophylaxis was performed with zidobudine and lamibudine, and enzyme linked immunoassay (ELISA) testing for medical personnel has been repeated three times during last 6 months.