Reported Tuberculosis in the United States, 2020
Table 59. Characteristics of Tuberculosis Cases Estimated to be Attributed to Recent Transmission and Extensive Recent Transmission: United States, 2019–2020
See Surveillance Slides #72, #73 and #74.
| 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 | 12,242 | 10,715 | (87.5) | 1,527 | (12.5) | 502 | (4.1) |
| Origin of Birth | |||||||
| U.S.-born | 3,329 | 2,493 | (74.9) | 836 | (25.1) | 298 | (9.0) |
| Non-U.S.–born | 8,886 | 8,197 | (92.2) | 689 | (7.8) | 204 | (2.3) |
| Unknown or Missing | 27 | 25 | (92.6) | 2 | (7.4) | 0 | (0.0) |
| Race and Ethnicity | |||||||
| Hispanic/Latino | 3,485 | 3,041 | (87.3) | 444 | (12.7) | 112 | (3.2) |
| American Indian/Alaska Native | 121 | 67 | (55.4) | 54 | (44.6) | 26 | (21.5) |
| Asian | 4,624 | 4,293 | (92.8) | 331 | (7.2) | 114 | (2.5) |
| Black or African American | 2,335 | 1,879 | (80.5) | 456 | (19.5) | 163 | (7.0) |
| Native Hawaiian/Other Pacific Islander | 161 | 106 | (65.8) | 55 | (34.2) | 29 | (18.0) |
| White | 1,373 | 1,204 | (87.7) | 169 | (12.3) | 51 | (3.7) |
| Multiple Race | 89 | 77 | (86.5) | 12 | (13.5) | 5 | (5.6) |
| Unknown or Missing | 54 | 48 | (88.9) | 6 | (11.1) | 2 | (3.7) |
| Age Group (Years) | |||||||
| 0–4 | 114 | 68 | (59.6) | 46 | (40.4) | 5 | (4.4) |
| 5–14 | 110 | 88 | (80.0) | 22 | (20.0) | 8 | (7.3) |
| 15–24 | 1,207 | 1,017 | (84.3) | 190 | (15.7) | 47 | (3.9) |
| 25–44 | 3,609 | 3,147 | (87.2) | 462 | (12.8) | 155 | (4.3) |
| 45–64 | 3,692 | 3,157 | (85.5) | 535 | (14.5) | 193 | (5.2) |
| ≥65 | 3,509 | 3,237 | (92.2) | 272 | (7.8) | 94 | (2.7) |
| Unknown | 1 | 1 | (100.0) | 0 | (0.0) | 0 | (0.0) |
| Disease Site | |||||||
| Pulmonary Only | 8,830 | 7,647 | (86.6) | 1,183 | (13.4) | 391 | (4.4) |
| Extrapulmonary | 1,902 | 1,742 | (91.6) | 160 | (8.4) | 46 | (2.4) |
| Both | 1,505 | 1,321 | (87.8) | 184 | (12.2) | 65 | (4.3) |
| Unknown | 5 | 5 | (100.0) | 0 | (0.0) | 0 | (0.0) |
| Sputum Smear | |||||||
| Positive | 5,983 | 5,204 | (87.0) | 779 | (13.0) | 257 | (4.3) |
| Negative | 4,909 | 4,331 | (88.2) | 578 | (11.8) | 179 | (3.6) |
| Not Done | 1,326 | 1,159 | (87.4) | 167 | (12.6) | 66 | (5.0) |
| Unknown or Missing | 24 | 21 | (87.5) | 3 | (12.5) | 0 | (0.0) |
| Cavitary Disease4 | |||||||
| Yes | 119 | 100 | (84.0) | 19 | (16.0) | 6 | (5.0) |
| No | 1,044 | 913 | (87.5) | 131 | (12.5) | 53 | (5.1) |
| Unknown or Missing | 17 | 15 | (88.2) | 2 | (11.8) | 0 | (0.0) |
| Homeless Within the Past Year | |||||||
| Yes | 546 | 382 | (70.0) | 164 | (30.0) | 75 | (13.7) |
| No | 11,523 | 10,189 | (88.4) | 1,334 | (11.6) | 411 | (3.6) |
| Unknown or Missing | 173 | 144 | (83.2) | 29 | (16.8) | 16 | (9.2) |
| Excess Alcohol Use Within the Past Year | |||||||
| Yes | 1,085 | 829 | (76.4) | 256 | (23.6) | 96 | (8.8) |
| No | 10,924 | 9,691 | (88.7) | 1,233 | (11.3) | 386 | (3.5) |
| Unknown or Missing | 233 | 195 | (83.7) | 38 | (16.3) | 20 | (8.6) |
| Injection Drug Use Within the Past Year | |||||||
| Yes | 144 | 96 | (66.7) | 48 | (33.3) | 19 | (13.2) |
| No | 11,863 | 10,421 | (87.8) | 1,442 | (12.2) | 460 | (3.9) |
| Unknown or Missing | 235 | 198 | (84.3) | 37 | (15.7) | 23 | (9.8) |
| NonInjection Drug Use Within the Past Year | |||||||
| Yes | 901 | 619 | (68.7) | 282 | (31.3) | 101 | (11.2) |
| No | 11,112 | 9,902 | (89.1) | 1,210 | (10.9) | 378 | (3.4) |
| Unknown or Missing | 229 | 194 | (84.7) | 35 | (15.3) | 23 | (10.0) |
| Resident of a Correctional Facility at the Time of Diagnosis | |||||||
| Yes | 295 | 233 | (79.0) | 62 | (21.0) | 43 | (14.6) |
| No | 11,853 | 10,404 | (87.8) | 1,449 | (12.2) | 456 | (3.8) |
| Unknown or Missing | 94 | 78 | (83.0) | 16 | (17.0) | 3 | (3.2) |
| HIV Status | |||||||
| Positive | 519 | 434 | (83.6) | 85 | (16.4) | 37 | (7.1) |
| Negative | 10,473 | 9,132 | (87.2) | 1,341 | (12.8) | 440 | (4.2) |
| Refused | 231 | 206 | (89.2) | 25 | (10.8) | 7 | (3.0) |
| Not Offered | 731 | 671 | (91.8) | 60 | (8.2) | 15 | (2.1) |
| Unknown, Missing or Indeterminate | 288 | 272 | (94.4) | 16 | (5.6) | 3 | (1.0) |
| Multidrug-Resistant TB | |||||||
| Yes | 142 | 120 | (84.5) | 22 | (15.5) | 8 | (5.6) |
| No | 11,635 | 10,162 | (87.3) | 1,473 | (12.7) | 481 | (4.1) |
| Unknown or Missing | 465 | 433 | (93.1) | 32 | (6.9) | 13 | (2.8) |
1Total 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).
2Number of cases attributed to recent transmission includes any given case with a plausible source case regardless of cluster size.
3Number 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).
4Cavitary disease is only assessed for persons with pulmonary TB and an abnormal x-ray.
Page last reviewed: October 21, 2021
