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Tuberculosis (TB)





Reported Tuberculosis in the United States, 2018						Print
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										Return to Main MenuFigure 2 – Estimated Percentage of Extensive Recent Transmission of Tuberculosis in Counties with 10 or More Genotyped Cases, United States, 2017–2018A TB case is estimated to be attributed to extensive recent transmission when the case is attributed to recent transmission using the plausible source case method, and the case belongs to a plausible transmission chain of 6 or more cases within 3 years prior to the case’s diagnosis date. A map of the United States is displayed with state borders as well as county or county equivalent borders for those jurisdictions that had 10 or more genotyped TB cases that could be evaluated for recent transmission during 2017-2018. Percentages of genotyped cases attributed to extensive recent transmission are shaded by county or county equivalent to depict jurisdictions that are disproportionately affected by extensive recent transmission. All 50 states are shown; the New York City metropolitan area is represented as a zoomed in frame on the map. A total of 16 county or county equivalents had more than 20 percent of genotyped cases during 2017-2018 attributed to extensive recent transmission.[JPG - 3 MB]A TB case is estimated to be attributed to extensive recent transmission when the case is attributed to recent transmission using the plausible source case method, and the case belongs to a plausible transmission chain of 6 or more cases within 3 years prior to the case’s diagnosis date.
A map of the United States is displayed with state borders as well as county or county equivalent borders for those jurisdictions that had 10 or more genotyped TB cases that could be evaluated for recent transmission during 2017–2018. Percentages of genotyped cases attributed to extensive recent transmission are shaded by county or county equivalent to depict jurisdictions that are disproportionately affected by extensive recent transmission. All 50 states are shown; the New York City metropolitan area is represented as a zoomed in frame on the map. A total of 16 county or county equivalents had more than 20 percent of genotyped cases during 2017–2018 attributed to extensive recent transmission.
							
					
							Last Reviewed:  September 6, 2019						Source: 	Division of Tuberculosis Elimination, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention
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        Syndicate homeTuberculosisData and Statisticsplus iconTB Incidence in the United StatesReported TB in the US, 2022 Surveillance Reportplus iconNational DataReporting Area DataRisk FactorsDemographicsTB Treatment and Case OutcomesDrug-Resistant TBMolecular SurveillanceTuberculosis in the United States, 2022 (Slide Set)Archived Surveillance Reports and Slide Sets2021 State and City ReportArchived State and City Reports To receive email updates about this page, enter your email address: Email Address			What's this?				Submit
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