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Reported Tuberculosis in the United States, 2021						Print
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Table 53. Tuberculosis Cases and Percentages Estimated to be Attributed to Recent Transmission and Extensive Recent Transmission: Counties with >5 Percent Estimated Extensive Recent Transmission, 2020–2021

Tuberculosis cases and percentages attributed to recent transmission and extensive recent transmission for counties with extensive recent transmission of 5 percent or more.
Counties and county equivalents1
Total cases2
Genotyped cases that are U.S.-born3
Unique GENTypes4
Cases attributed to recent transmission5
Cases attributed to extensive recent transmission6,7(%)
No.
No.
(%)
No.
(%)Alexandria (City), VA
10
(10.0)
10
3
(30.0)
1
(10.0)Anchorage/Mat-Su Region, AK
26
(42.3)
21
7
(26.9)
2
(7.7)Baltimore (City), MD
21
(47.6)
15
8
(38.1)
7
(33.3)Clark, NV
87
(24.1)
77
12
(13.8)
5
(5.7)Cumberland, ME
18
(33.3)
15
3
(16.7)
1
(5.6)Dallas, TX
170
(38.2)
140
33
(19.4)
19
(11.2)Davidson, TN
28
(35.7)
25
6
(21.4)
2
(7.1)Dekalb, GA
57
(31.6)
50
12
(21.1)
3
(5.3)Duval, FL
49
(63.3)
33
19
(38.8)
14
(28.6)Escambia, FL
13
(69.2)
8
6
(46.2)
5
(38.5)Fort Bend, TX
53
(26.4)
50
7
(13.2)
4
(7.5)Fulton, GA
48
(47.9)
45
7
(14.6)
4
(8.3)Harris, TX
361
(28.0)
300
55
(15.2)
26
(7.2)Hidalgo, TX
60
(26.7)
48
13
(21.7)
7
(11.7)Hillsborough, FL
53
(24.5)
48
8
(15.1)
5
(9.4)Hinds, MS
11
(72.7)
7
7
(63.6)
6
(54.5)Honolulu, HI
115
(9.6)
96
22
(19.1)
13
(11.3)Imperial, CA
36
(50.0)
27
11
(30.6)
5
(13.9)Jefferson, LA
24
(33.3)
22
6
(25.0)
2
(8.3)Jefferson, TX
17
(58.8)
10
7
(41.2)
6
(35.3)Kent, DE
15
(93.3)
5
7
(46.7)
6
(40.0)Kings, NY
216
(11.6)
193
38
(17.6)
17
(7.9)Los Angeles, CA
719
(14.2)
591
127
(17.7)
48
(6.7)Marion, OR
18
(33.3)
10
7
(38.9)
5
(27.8)Mecklenburg, NC
52
(36.5)
44
8
(15.4)
4
(7.7)Muscogee, GA
11
(81.8)
6
6
(54.5)
2
(18.2)New Castle, DE
24
(62.5)
14
9
(37.5)
5
(20.8)Orleans, LA
15
(73.3)
9
5
(33.3)
1
(6.7)Pinellas, FL
30
(40.0)
28
5
(16.7)
2
(6.7)Prince George’s, MD
59
(25.4)
55
8
(13.6)
3
(5.1)Queens, NY
334
(5.7)
310
47
(14.1)
18
(5.4)Ramsey, MN
45
(11.1)
41
7
(15.6)
4
(8.9)Robeson, NC
15
(93.3)
7
9
(60.0)
7
(46.7)San Diego, CA
298
(30.2)
230
71
(23.8)
33
(11.1)San Joaquin, CA
76
(14.5)
65
11
(14.5)
9
(11.8)San Mateo, CA
81
(4.9)
73
13
(16.0)
9
(11.1)Shelby, TN
40
(72.5)
25
18
(45.0)
7
(17.5)Southwest Region, AK
47
(95.7)
22
27
(57.4)
10
(21.3)Suffolk, MA
42
(4.8)
40
4
(9.5)
3
(7.1)Travis, TX
53
(30.2)
47
10
(18.9)
5
(9.4)Walker, TX
52
(88.5)
20
37
(71.2)
34
(65.4)Washington, AR
19
(10.5)
11
9
(47.4)
8
(42.1)
Show More1Counties (and county equivalents) that had >5% of cases attributed to extensive recent transmission are included.2Total 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).3Persons 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.4Total number of unique GENTypes identified in the reporting area among all genotyped cases that are eligible to be evaluated for recent transmission.5Number of cases attributed to overall recent transmission includes any given case with a plausible source case regardless of cluster size.6Number 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).7Percentage of cases attributed to extensive recent transmission calculated for counties with 10 or more genotyped cases.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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