In the Original Investigation titled "Clinical Consequences and Transmissibility of Drug-Resistant Tuberculosis in Southern Mexico," published in the March 13 issue of the ARCHIVES (2000;160:630-636), the confidence interval for the odds ratio for resistance to isoniazid and rifampin was incorrectly reported in Table 6 as "(0.4-0.6)." It should have been "(0.04-0.6)."