, Alleyna P. Claxton†, Robert J. Shorten*, Timothy D. McHugh*, and Stephen H. Gillespie*
Figure 2. . Suggested epidemiologic relationship between 6 cases of multidrug-resistant tuberculosis (MDR-TB). Resistance to rifampicin developed in patients 018, 483, and 915 while on therapy, whereas patients T7, 604, and 317 contracted primary MDR-TB. The type of mutation present in each patient's strain of MDR-TB is highlighted in bold.