TABLE 2.
All 391 cases of M. tuberculosis-positive TBa among Somalian immigrants in Denmark from 1996 through 1998 by age group and cluster frequency using refined cluster analysis based on assumptionsb about transmission
| Age (yr) | No. cluster/totalc (%)
|
|||
|---|---|---|---|---|
| 1996 | 1997 | 1998 | 1996–1998 | |
| ≤15 | 1/13 (7.7) | 5/20 (25.0) | 5/13 (38.5) | 11/46 (23.9) |
| 16–30 | 13/56 (23.2) | 22/86 (25.6) | 25/85 (29.4) | 60/227 (26.4) |
| 31–45 | 6/21 (28.6) | 8/38 (21.1) | 11/42 (26.2) | 25/101 (24.8) |
| 46–60 | 0 | 0/5 (0.0) | 1/3 (33.3) | 1/3 (33.3) |
| 61–75 | 0 | 1/3 (33.3) | 0/1 (0.0) | 1/3 (33.3) |
| >75 | 0 | 0 | 0 | 0 |
| No. cluster/ totalc (%) | 20/95 (21.1) | 36/152 (23.7) | 42/144 (29.2) | 98/391 (25.1) |
a
More than 97% of all reported M. tuberculosis culture-positive Somalian patients in Denmark.
b
Assumptions are specified Materials and Methods; in brief, the cluster should include one or more AFB smear-positive source patients.
c
Number of patients in a cluster divided by total number.