Table 1.
Incidence and prevalence of LES, other Psa strains and no Psa infection at Liverpool adult cystic fibrosis unit (2003–2009)
| 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | |
|---|---|---|---|---|---|---|---|
| LES | 95 (71%) | 105 (70%) | 109 (68%) | 116 (63%) | 115 (58%) | 115 (56%) | 114 (53%) |
| Other Psa | 30 (23%) | 31 (21%) | 37 (23%) | 45 (25%) | 48 (25%) | 56 (27%) | 66 (31%) |
| No Psa | 8 (6%) | 13 (9%) | 15 (9%) | 22 (12%) | 32 (17%) | 33 (17%) | 36 (17%) |
| Super-infection | 0 | 1 | 0 | 0 | 1 | 0 | 0 |
| Conversion (Non-Psa to Psa) | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| LES new transfers | 11 (57%) | 11 (48%) | 10 (42%) | 10 (33%) | 7 (25%) | 6 (20%) | 3 (13%) |
| Other Psa new transfers(%) | 6 (32%) | 7 (30%) | 11 (46%) | 13 (44%) | 8 (30%) | 14 (48%) | 11 (50%) |
| Non-Psa new transfers(%) | 2 (11%) | 5 (22%) | 3 (12%) | 7 (23%) | 12 (45%) | 9 (32%) | 8 (37%) |
Psa, Pseudomonas aeruginosa; LES, Liverpool epidemic strain