Isolate and patient characteristics
| Year | ||||
| 2006 | 2007 | 2008 | All years | |
| No. of isolates collected | 840 | 1471 | 1334 | 3645 |
| No. of isolates with available data | 836 | 1374 | 1284 | 3494 |
| No. of men (%) | 688 (82) | 1111 (81) | 999 (78) | 2798 (80) |
| No. of women (%) | 145 (17) | 253 (18) | 277 (22) | 675 (19) |
| No. where sex is unknown (%) | 3 (0.4) | 10 (0.7) | 8 (0.6) | 21 (0.6) |
| Maximum age (years) | 71 | 81 | 75 | 81 |
| Minimum age (years) | 14 | 15 | 6 | 6 |
| Median age (years) | 31.1 | 31.7 | 30.5 | 31.1 |
| Modal age (years) | 25 | 24 | 23 | 24 |