TABLE 1.
Epidemiologic characteristics of ST23 cases compared to ST1, ST47 other STs and all cases of Legionnaires disease due to Legionella pneumophila serogroup 1 in France, 2008–2012
| Characteristic | ST23 | ST1 | ST47 | Other ST | All |
|---|---|---|---|---|---|
| No. of subjects | 236 | 109 | 123 | 724 | 1192 |
| Male | 190 (80.5%) | 80 (73.4%) | 101 (82.1%) | 576 (79.6%) | 947 (79.5%) |
| Age (years) (mean/variable) | 59.1 | 63.3 | 60.6 | 58.7 | 59.4 |
| Death | 35 (16.1%) | 30 (30.9%) | 15 (13.2%) | 124 (18.6%) | 204 (18.6%) |
| Risk factor | |||||
| At least one | 172 (72.9%) | 82 (75.2%) | 85 (69.1%) | 540 (79.6%) | 879 (73.7%) |
| Cancer | 19 (8.1%) | 26 (23.9%) | 13 (10.6%) | 80 (11.1%) | 138 (11.6%) |
| Steroid therapy | 10 (4.2%) | 24 (22.0%) | 12 (9.8%) | 68 (9.4%) | 114 (9.6%) |
| Diabetes | 42 (17.8%) | 13 (11.9%) | 24 (19.5%) | 107 (14.8%) | 186 (15.6%) |
| Tobacco | 124 (52.5%) | 31 (28.4%) | 55 (44.7%) | 370 (51.1%) | 580 (48.7%) |
| Exposure | |||||
| Hospital-acquired infection | 7 (3.0%) | 34 (31.2%) | 3 (2.4%) | 45 (6.2%) | 89 (7.5%) |
| Travel | 29 (12.3%) | 12 (11.0%) | 21 (17.1%) | 142 (19.6%) | 204 (17.1%) |
| Elderly setting | 9 (3.8%) | 6 (5.5%) | 0 | 14 (1.9%) | 29 (2.4%) |
| Region | |||||
| 1 | 27 (11.4%) | 44 (40.4%) | 16 (13.0%) | 94 (13.0%) | 181 (15.2%) |
| 2 | 13 (5.5%) | 13 (11.9%) | 17 (13.8%) | 114 (15.8%) | 157 (13.2%) |
| 3 | 88 (37.3%) | 14 (12.8%) | 73 (59.4%) | 229 (31.6%) | 404 (33.9%) |
| 4 | 93 (39.4%) | 37 (33.9%) | 13 (10.6%) | 219 (30.3%) | 362 (30.4%) |
| 5 | 15 (6.4%) | 1 (0.9%) | 4 (3.3%) | 68 (9.4%) | 88 (7.4%) |
ST, sequence type.