2008 Surveillance Slides
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| Slide 23. Extensively Drug Resistant (XDR) TB, as Defined on Initial Drug Susceptibility Testing (DST), United States, 1993–2008. This graph shows the annual number of counted XDR TB cases as defined on initial DST from 1993-2008, reported as of May 20, 2009. Four XDR TB cases were reported in 2008. The most reported in a single year was 10 in 1993, while there were no cases reported in 2003. There is no apparent trend in the number of cases over time.
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