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High incidence of pulmonary tuberculosis in pathologists at Tokai University Hospital: an epidemiological study.

Between 1935 and 1950 tuberculosis was the most common cause of death in Japan. Subsequently, the mortality rate, incidence, and prevalence of tuberculosis have decreased remarkably due to socioeconomic improvements and development of specific chemotherapy. It has been suspected that the incidence and prevalence of pulmonary tuberculosis in hospital workers, particularly those employed in pathology divisions, may be higher than those for other health care workers. However, there have been no reports on this subject. We conducted a questionnaire survey to assess and compare the incidence of pulmonary tuberculosis in pathologists at Tokai University Hospital with that in other employees of the University. Data on history of treatment for tuberculosis were obtained. The incidence of pulmonary tuberculosis in pathologists was significantly higher than that in other university employees, including clinical doctors who see patients with tuberculosis. These findings suggest that specific environmental conditions in the Pathology Division represent an occupational hazard although the infection might be contracted from other hospital staff.