Reported Tuberculosis in the United States, 2017

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Table 58. Counts and Percentages of Tuberculosis Cases Estimated to be Attributed to Recent Transmission and Extensive Recent Transmission: Counties with >5 Percent Estimated Extensive Recent Transmission, 2016–2017

Table 58. Counts and Percentages of Tuberculosis Cases Estimated to be Attributed to Overall and Extensive Recent Transmission: Counties with >5 Percent Estimated Extensive Recent Transmission, 2016-2017
Counties and County Equivalents1 Total Genotyped Cases2 Percentage of Genotyped Cases that are U.S.-born Number of Unique GENTypes3 Cases Attributed to Recent Transmission4 Cases Attributed to Extensive Recent Transmission5 Percentage of Cases Attributed to Extensive Recent Transmission6
Arlington, VA 19 5.3 19 2 1 5.3
Baltimore (City), MD 41 48.8 33 10 9 22.0
Bergen, NJ 36 19.4 34 4 3 8.3
Brazoria, TX 15 40.0 13 2 1 6.7
Bronx, NY 134 22.4 118 29 8 6.0
Charleston, SC 13 84.6 7 6 1 7.7
Collin, TX 37 21.6 34 2 2 5.4
Cook, IL 312 27.6 265 55 16 5.1
Cuyahoga, OH 25 48.0 24 2 2 8.0
Dallas, TX 259 48.3 207 51 39 15.1
District Of Columbia 48 31.3 37 14 7 14.6
Duval, FL 78 64.1 51 30 19 24.4
Escambia, FL 20 80.0 10 11 11 55.0
Essex, NJ 58 19.0 53 9 3 5.2
Etowah, AL 21 90.5 8 14 7 33.3
Fulton, GA 54 74.1 39 21 11 20.4
Hall, GA 11 81.8 6 6 6 54.5
Harris, TX 392 33.2 299 95 51 13.0
Hidalgo, TX 108 41.7 81 32 10 9.3
Hinds, MS 25 76.0 16 12 7 28.0
Imperial, CA 58 32.8 36 25 14 24.1
Jefferson, AL 23 73.9 17 9 4 17.4
Kings, NY 264 16.7 231 52 25 9.5
Los Angeles, CA 904 15.5 717 163 69 7.6
Marin, CA 10 20.0 7 4 3 30.0
Montgomery, AL 10 80.0 6 6 1 10.0
Morris, NJ 15 6.7 15 1 1 6.7
Muscogee, GA 11 72.7 7 5 5 45.5
New York, NY 105 18.1 101 21 6 5.7
Nueces, TX 20 55.0 14 6 6 30.0
Northern (Region), AK 11 81.8 7 6 4 36.4
Orange, FL 88 34.1 77 10 6 6.8
Perry, AL 11 100.0 2 10 10 90.9
Ramsey, MN 65 7.7 52 13 6 9.2
Robeson, NC 26 92.3 8 16 13 50.0
San Diego, CA 386 25.9 313 72 39 10.1
San Joaquin, CA 70 32.9 52 19 16 22.9
Shelby, TN 53 66.0 33 22 16 30.2
Southwest (Region), AK 38 97.4 14 22 17 44.7
St. Louis (City), MO 19 52.6 15 5 1 5.3
Travis, TX 66 28.8 58 12 6 9.1
Tulsa, OK 17 52.9 15 3 1 5.9
Walker, TX 42 88.1 20 24 15 35.7
Washington, AR 14 35.7 8 5 4 28.6
Wayne, MI 41 48.8 38 4 4 9.8
Webb, TX 45 53.3 33 18 6 13.3
Yakima, WA 14 42.9 11 5 2 14.3

1 Counties (and county equivalents) that had >5% of cases attributed to extensive recent transmission are included in table 58.
2 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).
3 Total number of unique GENTypes identified in the reporting area among all genotyped cases that are eligible to be evaluated for recent transmission.
4 Number of cases attributed to recent transmission includes any given case with a plausible source case regardless of cluster size.
5 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).
6 Proportion of cases attributed to extensive recent transmission calculated for counties with 10 or more genotyped cases.

Page last reviewed: October 22, 2018