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This analysis aims to identify and characterize large tuberculosis outbreaks in the United States from 2017 to 2023.

May 3, 2026

Large Tuberculosis Outbreaks - United States, 2017-2023.

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This analysis aims to identify and characterize large tuberculosis outbreaks in the United States from 2017 to 2023.
Analyzed national genomic and tuberculosis case surveillance data for 2017-2023.
Identified 50 TB outbreaks involving 1,092 cases across 23 states.
Examined demographic factors and methods of case identification in outbreak-related cases.
79% of outbreak cases were U.S.-born compared to 26% in other diagnosed TB cases.
Contact tracing identified 25% of outbreak cases, which had fewer clinical markers of infectious disease (23%).
34 outbreaks (68%) were linked to family or social networks, while 13 (26%) were linked to congregate settings.

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Analysis identifies 50 large TB outbreaks among 1,092 cases, highlighting key factors related to diagnosis and community response.

Raz et al. (2026) studied this question.

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