Table.

Tuberculin skin test results for 153 passengers who were exposed to a transport driver with infectious TB, stratified by passenger characteristics, in six metropolitan areas of the District of Columbia: November 2008–January 2009

^aP-values correspond to Wilcoxon ranked sum test or the Fisher's exact test as appropriate.

^bTB symptoms included coughing up blood, chronic cough >3 weeks, soaking night sweats, chronic fatigue, weight loss, or fever.

^cThere was no difference in the percentage of passengers with these conditions and those without these conditions who had positive TST results.

^dMissing for one passenger with ≥90 minutes of cumulative exposure

^eMedications included >15 milligrams of prednisone or its equivalent for >4 weeks, chemotherapy agents, antirejection drugs for organ transplantation, or tumor necrosis factor alpha antagonists.

^fMissing for five passengers; two had ≥90 minutes and three had <90 minutes of cumulative exposure

TB = tuberculosis

TST = tuberculin skin test

NA = not applicable

HIV = human immunodeficiency virus