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Reported Tuberculosis in the United States, 2021						Print
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Table 54. Characteristics of Tuberculosis Cases Estimated to be Attributed to Recent Transmission and Extensive Recent Transmission: United States, 2020–2021
See Surveillance Slides #65, #66, and #67.
Characteristics of tuberculosis cases attributed to recent transmission and extensive recent transmission.
Characteristics
Total cases1
Cases not attributed to recent transmission
Cases attributed to recent transmission2
Cases attributed to extensive recent transmission3No.
(%)
No.
(%)
No.
(%)Total
11,404
10,004
(87.7)
1,400
(12.3)
456
(4.0)**Origin of birth4**U.S.-born
3,020
2,270
(75.2)
750
(24.8)
269
(8.9)Non-U.S.–born
8,344
7,700
(92.3)
644
(7.7)
186
(2.2)Unknown or missing
40
34
(85.0)
6
(15.0)
1
(2.5)**Race and ethnicity**Hispanic or Latino
3,328
2,895
(87.0)
433
(13.0)
111
(3.3)American Indian or Alaska Native
125
73
(58.4)
52
(41.6)
23
(18.4)Asian
4,330
4,031
(93.1)
299
(6.9)
87
(2.0)Black or African American
2,061
1,658
(80.4)
403
(19.6)
155
(7.5)Native Hawaiian or Other Pacific Islander
164
106
(64.6)
58
(35.4)
28
(17.1)White
1,233
1,100
(89.2)
133
(10.8)
43
(3.5)Multiple race
100
87
(87.0)
13
(13.0)
6
(6.0)Unknown or missing
63
54
(85.7)
9
(14.3)
3
(4.8)**Age group, years**0–4
100
59
(59.0)
41
(41.0)
5
(5.0)5–14
117
90
(76.9)
27
(23.1)
8
(6.8)15–24
1,063
897
(84.4)
166
(15.6)
35
(3.3)25–44
3,344
2,881
(86.2)
463
(13.8)
160
(4.8)45–64
3,494
3,039
(87.0)
455
(13.0)
165
(4.7)≥65
3,286
3,038
(92.5)
248
(7.5)
83
(2.5)**Disease site**Pulmonary only
8,145
7,074
(86.9)
1,071
(13.1)
341
(4.2)Extrapulmonary
1,738
1,593
(91.7)
145
(8.3)
43
(2.5)Both
1,516
1,332
(87.9)
184
(12.1)
72
(4.7)Unknown
5
5
(100.0)
0
(0.0)
0
(0.0)**Sputum smear**Positive
5,764
5,019
(87.1)
745
(12.9)
252
(4.4)Negative
4,362
3,865
(88.6)
497
(11.4)
141
(3.2)Not done
1,258
1,101
(87.5)
157
(12.5)
62
(4.9)Unknown or missing
20
19
(95.0)
1
(5.0)
1
(5.0)**Cavitary disease5**Yes
136
115
(84.6)
21
(15.4)
8
(5.9)No
1,043
912
(87.4)
131
(12.6)
53
(5.1)Unknown or missing
13
10
(76.9)
3
(23.1)
1
(7.7)**Homeless within past year**Yes
501
365
(72.9)
136
(27.1)
65
(13.0)No
10,777
9,530
(88.4)
1,247
(11.6)
384
(3.6)Unknown or missing
126
109
(86.5)
17
(13.5)
7
(5.6)**Excess alcohol use within past year**Yes
1,033
802
(77.6)
231
(22.4)
97
(9.4)No
10,162
9,033
(88.9)
1,129
(11.1)
344
(3.4)Unknown or missing
209
169
(80.9)
40
(19.1)
15
(7.2)**Injecting drug use within past year**Yes
127
89
(70.1)
38
(29.9)
16
(12.6)No
11,061
9,740
(88.1)
1,321
(11.9)
421
(3.8)Unknown or missing
216
175
(81.0)
41
(19.0)
19
(8.8)**Noninjecting drug use within past year**Yes
807
552
(68.4)
255
(31.6)
98
(12.1)No
10,385
9,281
(89.4)
1,104
(10.6)
337
(3.2)Unknown or missing
212
171
(80.7)
41
(19.3)
21
(9.9)**Resident of a correctional facility at time of diagnosis**Yes
255
187
(73.3)
68
(26.7)
46
(18.0)No
11,078
9,761
(88.1)
1,317
(11.9)
404
(3.6)Unknown or missing
71
56
(78.9)
15
(21.1)
6
(8.5)**HIV status**Positive
470
397
(84.5)
73
(15.5)
28
(6.0)Negative
9,753
8,548
(87.6)
1,205
(12.4)
392
(4.0)Refused
229
201
(87.8)
28
(12.2)
8
(3.5)Not offered
695
620
(89.2)
75
(10.8)
23
(3.3)Unknown, missing or indeterminate
257
238
(92.6)
19
(7.4)
5
(1.9)**Multidrug-resistant TB**Yes
129
111
(86.0)
18
(14.0)
5
(3.9)No
10,953
9,607
(87.7)
1,346
(12.3)
434
(4.0)Unknown or missing
322
286
(88.8)
36
(11.2)
17
(5.3)Show More1Total 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).4Persons born in the United States, certain U.S. territories, or elsewhere to at least one U.S. citizen parent are categorized as U.S.-born. All other persons are categorized as non-U.S.–born.5Cavitary disease only assessed for persons with pulmonary TB and an abnormal x-ray.
**Note:**See Technical Notes.Table Printing Tips
							
					
							Last Reviewed:  November 29, 2022						Source: 	Division of Tuberculosis Elimination, National Center for HIV, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention
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