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1997 Surveillance Slides

Reported TB Cases, United States, 1953 - 1997

Slide 1: Graph of the Reported TB Cases, United States, 1953 - 1997.
Slide 1.   This graph shows the total number of TB cases reported annually in the United States from 1953, the year national TB surveillance officially began, through 1997. From 1953 through 1985, the number of reported TB cases declined steadily, from more than 84,000 in 1953 to 22,201 in 1985. From 1985 through 1992, however, the number of cases increased by 20% to 26,673. This resurgence of TB has been attributed to at least four factors: the HIV/AIDS epidemic, immigration from countries where TB is common, the transmission of TB in congregate settings, and a deterioration of the public health infrastructure. 
TB Case Definitions
Prior to 1962, only persons with primary TB who had clinical specimens demonstrating acid fast bacilli were included in the annual TB case count. In 1962, all states began including in the annual case count TB patients who had primary TB with either laboratory or x-ray evidence of active disease. In 1975, persons with TB classified as "reactivation" of latent infection were included in the annual TB morbidity case count for the first time, in addition to primary TB cases.


Released October 2008
Centers for Disease Control and Prevention
National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention
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