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Table 8. Resistance to Isoniazid with or without Rifampin Resistance in Reported TB Cases with No Previous TB by Origin: United States, 1993-2001

Year
Resistant to Isoniazid1 Resistant to Isoniazid and Rifampin1
Total Cases2
U.S.-born
Foreign-born3
Total Cases2
U.S.-born
Foreign-born3
No. % No. % No. % No. % No. % No. %
1993
1,401 8.4 805 6.8 579 12.4 410 2.5 302 2.6 105 2.3
1994
1,355 8.3 709 6.4 632 12.1 352 2.2 238 2.2 109 2.1
1995
1,171 7.3 554 5.4 616 11.0 252 1.6 168 1.6 84 1.5
1996
1,137 7.4 495 5.2 639 11.3 206 1.3 104 1.1 101 1.8
1997
1,080 7.5 436 5.0 639 11.2 155 1.1 76 0.9 79 1.4
1998
1,011 7.5 366 4.7 643 11.3 130 1.0 55 0.7 74 1.3
1999
904 7.1 284 4.0 618 11.0 128 1.0 39 0.6 89 1.6
2000
881 7.5 267 4.3 611 11.0 118 1.0 37 0.6 81 1.5
2001
781 7.1 238 4.5 532 9.6 114 1.0 32 0.6 78 1.4
1Isolates may be resistant to other drugs.
2Includes persons of unknown country of birth.
3Includes persons born outside the United States, American Samoa, the Federated States of Micronesia, Guam, the Republic of the Marshall Islands, Midway Island, the Commonwealth of the Northern Mariana Islands, Puerto Rico, the Republic of Palau, U.S. Minor Outlying Islands, U.S. Miscellaneous Pacific Islands, and the U.S. Virgin Islands.
Note:  Data for all years updated through April 10, 2002.
More than 85% of all cases in each group had drug susceptibility test results reported for an initial isolate.
See Surveillance Slides #18, #19, #20, and #21.

 


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