Reported Tuberculosis in the United States, 2017
Table 59. Characteristics of Tuberculosis Cases Estimated to be Attributed to Recent Transmission and Extensive Recent Transmission: United States, 2016–2017
| Case Characteristics | Total Genotyped Cases1 | Cases Not Attributed to Recent Transmission | Cases Attributed to Recent Transmission2 | Cases Attributed to Extensive Recent Transmission3 | |||
|---|---|---|---|---|---|---|---|
| No. | (%) | No. | (%) | No. | (%) | ||
| Total | 13,650 | 11,863 | (86.9) | 1,787 | (13.1) | 625 | (4.6) |
| Origin of Birth | |||||||
| U.S-born | 4,019 | 2,988 | (74.3) | 1,031 | (25.6) | 427 | (10.6) |
| Non-U.S.–born | 9,613 | 8,860 | (92.1) | 753 | (7.8) | 197 | (2.0) |
| Unknown or Missing | 18 | 15 | (83.3) | 3 | (16.7) | 1 | (5.6) |
| Race and Ethnicity | |||||||
| Hispanic/Latino | 3,693 | 3,185 | (86.2) | 508 | (13.8) | 152 | (4.1) |
| American Indian/Alaska Native | 168 | 109 | (64.9) | 59 | (35.1) | 34 | (20.2) |
| Asian | 5,045 | 4,656 | (92.3) | 389 | (7.7) | 116 | (2.3) |
| Black or African American | 2,808 | 2,231 | (79.4) | 577 | (20.5) | 243 | (8.6) |
| Native Hawaiian/Other Pacific Islander | 129 | 105 | (81.4) | 24 | (18.6) | 6 | (4.6) |
| White | 1,662 | 1,454 | (87.5) | 208 | (12.5) | 68 | (4.1) |
| Multiple Race | 107 | 89 | (83.2) | 18 | (16.8) | 6 | (5.6) |
| Unknown or Missing | 38 | 34 | (89.5) | 4 | (10.5) | 0 | (0.0) |
| Age Group (Years) | |||||||
| 0–4 | 126 | 74 | (58.7) | 52 | (41.3) | 8 | (6.3) |
| 5–14 | 119 | 93 | (78.2) | 26 | (21.8) | 9 | (7.6) |
| 15–24 | 1,324 | 1,122 | (84.7) | 202 | (15.2) | 67 | (5.1) |
| 25–44 | 4,202 | 3,616 | (86.0) | 586 | (13.9) | 202 | (4.8) |
| 45–64 | 4,180 | 3,552 | (85.0) | 628 | (15.0) | 238 | (5.7) |
| ≥65 | 3,694 | 3,401 | (92.1) | 293 | (7.9) | 101 | (2.7) |
| Unknown | 5 | 5 | (100.0) | 0 | (0.0) | 0 | (0.0) |
| Disease Site | |||||||
| Pulmonary Only | 10,001 | 8,569 | (85.7) | 1,432 | (14.3) | 503 | (5.0) |
| Extrapulmonary | 2,087 | 1,899 | (91.0) | 188 | (9.0) | 65 | (3.1) |
| Both | 1,553 | 1,387 | (89.3) | 166 | (10.7) | 56 | (3.6) |
| Unknown | 9 | 8 | (88.9) | 1 | (11.1) | 1 | (11.1) |
| Sputum Smear | |||||||
| Positive | 6,318 | 5,411 | (85.6) | 907 | (14.4) | 330 | (5.2) |
| Negative | 5,403 | 4,742 | (87.8) | 661 | (12.2) | 225 | (4.2) |
| Not Done | 1,914 | 1,695 | (88.6) | 219 | (11.4) | 70 | (3.6) |
| Unknown or Missing | 15 | 15 | (100.0) | 0 | (0.0) | 0 | (0.0) |
| Cavitary Disease4 | |||||||
| Yes | 123 | 106 | (86.2) | 17 | (13.8) | 7 | (5.7) |
| No | 1,108 | 985 | (88.9) | 123 | (11.1) | 42 | (3.8) |
| Unknown or Missing | 3 | 3 | (100.0) | 0 | (0.0) | 0 | (0.0) |
| Homeless Within Past Year | |||||||
| Yes | 677 | 463 | (68.4) | 214 | (31.6) | 110 | (16.2) |
| No | 12,891 | 11,333 | (87.9) | 1,558 | (12.1) | 511 | (4.0) |
| Unknown or Missing | 82 | 67 | (81.7) | 15 | (18.3) | 4 | (4.9) |
| Excess Alcohol Use Within the Past Year | |||||||
| Yes | 1,363 | 1,000 | (73.4) | 363 | (26.6) | 146 | (10.7) |
| No | 12,073 | 10,689 | (88.5) | 1,384 | (11.5) | 464 | (3.8) |
| Unknown or Missing | 214 | 174 | (81.3) | 40 | (18.7) | 15 | (7.0) |
| Injecting Illicit Drug Use Within Past Year | |||||||
| Yes | 165 | 118 | (71.5) | 47 | (28.5) | 18 | (10.9) |
| No | 13,286 | 11,585 | (87.2) | 1,701 | (12.8) | 595 | (4.5) |
| Unknown or Missing | 199 | 160 | (80.4) | 39 | (19.6) | 12 | (6.0) |
| Noninjecting Illicit Drug Use Within Past Year | |||||||
| Yes | 978 | 667 | (68.2) | 311 | (31.8) | 141 | (14.4) |
| No | 12,480 | 11,040 | (88.5) | 1,440 | (11.5) | 474 | (3.8) |
| Unknown or Missing | 192 | 156 | (81.2) | 36 | (18.8) | 10 | (5.2) |
| Resident of a Correctional Facility at the Time of Diagnosis | |||||||
| Yes | 431 | 348 | (80.7) | 83 | (19.2) | 40 | (9.3) |
| No | 13,112 | 11,426 | (87.1) | 1,686 | (12.8) | 582 | (4.4) |
| Unknown or Missing | 107 | 89 | (83.2) | 18 | (16.8) | 3 | (2.8) |
| HIV Status | |||||||
| Positive | 681 | 570 | (83.7) | 111 | (16.3) | 52 | (7.6) |
| Negative | 11,512 | 9,983 | (86.7) | 1,529 | (13.3) | 527 | (4.6) |
| Refused | 270 | 243 | (90.0) | 27 | (10.0) | 11 | (4.1) |
| Not Offered | 793 | 709 | (89.4) | 84 | (10.6) | 29 | (3.6) |
| Unknown, Missing or Indeterminate | 394 | 358 | (90.9) | 36 | (9.1) | 6 | (1.5) |
| Multidrug-Resistant TB | |||||||
| Yes | 215 | 184 | (85.6) | 31 | (14.4) | 10 | (4.6) |
| No | 12,736 | 11,070 | (86.9) | 1,666 | (13.1) | 588 | (4.6) |
| Unknown or Missing | 699 | 609 | (87.1) | 90 | (12.9) | 27 | (3.8) |
1 Total number of M. tuberculosis genotyped cases that are eligible to be evaluated for recent transmission (i.e., complete data for the plausible-source case method’s algorithm).
2 Number of cases attributed to recent transmission includes any given case with a plausible source case regardless of cluster size.
3 Number of cases attributed to extensive recent transmission includes only cases in a plausible chain of transmission of six or more cases (five secondary and one source case).
4 Cavitary disease only assessed for persons with pulmonary TB and an abnormal x-ray.
Page last reviewed: October 22, 2018
