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. 2021 Mar 17;137(1):94–101. doi: 10.1177/0033354921999167

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Figure 1. — Tuberculosis (TB) outbreak–associated cases in rural Arkansas, 2010-2018. A confirmed outbreak case was defined as TB in a person with culture-confirmed disease reported during January 1, 2010–July 1, 2018, in the United States with (1) the outbreak genotype defined by spacer oligonucleotide typing and 24-locus mycobacterial interspersed repetitive units variable-number tandem repeat and (2) whole-genome sequencing results within 5 single nucleotide polymorphisms of an isolate of another outbreak case. A probable outbreak case was defined as TB in a person with culture-negative disease reported during the same period and an epidemiologic link to a person meeting the definition of a confirmed outbreak case.