The epidemiology of tuberculosis in the United States.

摘要: After a dramatic increase in the incidence of TB United States from 1985 to 1992, epidemiology changed, with both number cases and decreasing since 1992. The decreases have been focal, however, affecting only certain geographic areas (e.g., New York, California, Jersey) populations 25-44 year age group people born States). factors responsible for decrease those are multiple but most important thought be improvements control treatment programs communities serving at greatest risk TB. Despite overall decline cases, numbers foreign-born continue increase. Factors contributing among include prevalence country origin, duration residence after immigration, inadequate screening or before entering States, follow-up who entered noninfectious (i.e., abnormal chest radiograph negative sputum smears). Control population is essential if current downward trend reported maintained. HIV epidemic had significant impact on late 1980s measures transmission appear effective reversing that trend. national morbidity can sustained through organized efforts by federal private agencies state local health departments ensure all identified treated promptly. Such must aimed as high TB, especially infected HIV.