Table 2. Characteristics of detected clusters, 2002–2006.
| Cluster Characteristics | n (%) |
| Total clusters | 59 |
| Annual clusters: median (range) | 12 (7–16) |
| Year | |
| 2002 | 14 (23.7) |
| 2003 | 7 (11.9) |
| 2004 | 10 (16.9) |
| 2005 | 12 (20.3) |
| 2006 | 16 (27.1) |
| Organisms | |
| Gram positive | 21 (35.6) |
| Gram negative | 31 (52.5) |
| Fungi | 7 (11.9) |
| Alert type a | |
| Hospital-wide | 11 (18.0) |
| Ward(s) | 16 (26.2) |
| Service(s) | 8 (13.1) |
| Antibiotic profile | 26 (42.6) |
| Size ( n cases) | |
| 1–2 | 12 (20.3) |
| 3–5 | 27 (45.8) |
| 6–10 | 11 (18.6) |
| >10 | 9 (15.3) |
a
Two clusters were identified by two different types of alerts.