Occupational risk to surgeons of unrecognized HIV infection in a low-prevalence area.

Data are available on the occupational risk to surgeons of the human immunodeficiency virus (HIV) for areas of high HIV prevalence but not for low-risk areas and particularly for unrecognized HIV infection. The 40-year cumulative occupational risk to surgeons caring for patients with unknown HIV serologies in a low-prevalence area was estimated. From May 1989 to May 1991, 4119 consecutive patients with unknown HIV status, hospitalized in our department, were proposed for testing; 100% complied. Acquired immunodeficiency syndrome (AIDS) patients and known seropositive patients operated on during this period were excluded from the study. The prevalence of unknown HIV infection was 0.07%. Taking into account the rate of parenteral injuries, the rate of contamination after an infected parenteral injury, and the total number of operations performed during a 40-year career, we estimated the cumulative risk of unknown HIV infection in our area to be 1%. This risk must be added to those of caring for known infected patients. In high-risk areas (cumulative risk 10%), a high standard of infection control is required for every surgical procedure, even if it is expensive or of doubtful efficacy. It is unrealistic to apply this standard in a low-risk area. HIV testing with informed consent of the patient is an imperfect guard against infection but has the advantage of alerting the surgeon to the risk of contamination on a case-by-case basis; it also offers the seropositive patient the best possibility for a longer life expectancy.