Reported Tuberculosis in the United States, 2022
Table 24. Tuberculosis Cases and Clusters by Cluster Size:1 United States, 2020–2022
See surveillance slide #49.
| Cluster size | Clusters | Cases2 | ||
|---|---|---|---|---|
| No. | (%)3 | No. | (%)4 | |
| Total | 987 | (100.0) | 2,999 | (100.0) |
| 2 case cluster | 675 | (68.4) | 1,350 | (45.0) |
| 3 case cluster | 139 | (14.1) | 417 | (13.9) |
| 4 case cluster | 64 | (6.5) | 256 | (8.5) |
| 5 case cluster | 36 | (3.7) | 180 | (6.0) |
| 6 case cluster | 17 | (1.7) | 102 | (3.4) |
| 7 case cluster | 9 | (0.9) | 63 | (2.1) |
| 8 case cluster | 13 | (1.3) | 104 | (3.5) |
| 9 case cluster | 7 | (0.7) | 63 | (2.1) |
| ≥10 case cluster | 27 | (2.7) | 464 | (15.5) |
1wgMLSType clusters have two or more cases with matching wgMLSType within a county during the specified 3-year time period.
2Cases with matching wgMLSType are members of a cluster within a county during the specified 3-year time period.
3Denominator is total number of clusters.
4Denominator is total number of cases.
Note:
Data for all years are updated through July 8, 2023.