Reported Tuberculosis in the United States, 2018

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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% Estimated Extensive Recent Transmission, 2017–2018

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, 2017–2018
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
Alameda, CA 217 8.8 204 21 11 5.1
Baltimore (City), MD 31 48.4 24 9 7 22.6
Baltimore (County), MD 38 18.4 35 3 2 5.3
Charleston, SC 17 88.2 11 7 3 17.6
Collin, TX 32 21.9 30 2 2 6.3
Cook, IL 285 29.5 245 46 16 5.6
Cumberland, ME 10 20.0 6 5 1 10.0
Dallas, TX 241 44.4 194 46 30 12.4
District Of Columbia 49 26.5 44 8 4 8.2
Duval, FL 68 69.1 45 26 13 19.1
Escambia, FL 14 78.6 8 7 7 50.0
Etowah, AL 15 80.0 5 11 10 66.7
Fulton, GA 52 69.2 39 19 7 13.5
Guilford, NC 26 38.5 23 6 2 7.7
Hall, GA 10 90.0 7 4 4 40.0
Harris, TX 397 31.0 305 93 54 13.6
Hidalgo, TX 89 38.2 72 23 7 7.9
Hinds, MS 19 94.7 10 13 5 26.3
Howard, MD 17 11.8 16 1 1 5.9
Hudson, NJ 81 7.4 76 11 5 6.2
Imperial, CA 62 30.6 43 21 11 17.7
Jefferson, AL 29 69.0 21 10 7 24.1
Kings, NY 246 14.2 218 45 23 9.3
Los Angeles, CA 888 14.3 707 165 71 8.0
Marion, OR 19 47.4 10 9 3 15.8
Marshall, AL 13 84.6 5 6 2 15.4
Morris, NJ 18 11.1 18 1 1 5.6
Muscogee, GA 11 63.6 8 4 3 27.3
New York, NY 117 19.7 108 21 9 7.7
Northern (Region), AK 10 80.0 5 7 5 50.0
Nueces, TX 20 60.0 16 5 5 25.0
Orange, FL 101 31.7 87 16 7 6.9
Ouachita, LA 13 92.3 6 9 4 30.8
Pinellas, FL 45 68.9 30 15 5 11.1
Queens, NY 344 7.0 315 47 20 5.8
Ramsey, MN 58 15.5 47 13 9 15.5
Robeson, NC 29 100.0 10 19 15 51.7
San Diego, CA 368 26.1 307 63 30 8.2
San Joaquin, CA 67 40.3 51 17 15 22.4
Shelby, TN 57 66.7 39 21 13 22.8
Southwest (Region), AK 44 97.7 10 32 22 50.0
St. Louis (City), MO 18 38.9 15 4 1 5.6
St. Louis (County), MO 15 26.7 15 2 1 6.7
Walker, TX 38 92.1 20 24 12 31.6
Washington, AR 11 27.3 5 4 3 27.3
Yakima, WA 12 41.7 11 2 1 8.3
York, SC 10 100.0 6 6 1 10.0

1Counties and county equivalents that had >5% of cases attributed to extensive recent transmission are included.
2Total number of Mycobacterium tuberculosis genotyped cases that are eligible to be evaluated for recent transmission (i.e., complete data for the plausible source-case method’s algorithm).
3Total number of unique GENTypes identified in the reporting area among all genotyped cases that are eligible to be evaluated for recent transmission.
4Number of cases attributed to recent transmission includes any given case with a plausible source case, regardless of cluster size.
5Number of cases attributed to extensive recent transmission includes only cases in a plausible chain of transmission of ≥6 cases (≥5 secondary and 1 source case).
6Proportion of cases attributed to extensive recent transmission calculated for counties with ≥10 genotyped cases.

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