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Reported Tuberculosis in the United States, 2012

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Table 23. Tuberculosis Cases by Cluster Status1: United States, 2010–2012

Cluster StatusCases










1 Cluster status indicates whether a case is unique or clustered within a county.

2 A unique case is a case with a spoligotype and 24 locus mycobacterial interspersed repetitive unit-variable number tandem repeat type (GENType) that does not match any other case in that county during the specified three-year time period.

3 Clustered cases are defined as two or more cases with same GENType within a county during the specified 3-year time period.

Note: See Surveillance Slide #34

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