2010 Surveillance Slides
Slide 20. Primary MDR TB, United States, 1993–2010. This graph focuses on trends in primary MDR TB (based on initial isolates from persons with no prior history of TB) in the United States from 1993 through 2010. The number of primary MDR TB cases, represented by bars, steadily declined from 407 in 1993 to 115 in 2001. Since then the total number of primary MDR TB cases has fluctuated from 88 to 132 cases, with 88 cases reported for 2010. Primary MDR TB, shown by the line, decreased from 2.5% in 1993 to approximately 1.1% in 1997, and remained approximately at 1.0% up to 2010 when it increased to 1.2%.