Antimicrobial susceptibility of lower respiratory tract isolates by organism and age group, England, Wales and Northern Ireland (January 2007–March 2010)
| Tested (%S) | |||||||
| Age (years) | Total isolates | Tetracyclines | Co-amoxiclav | Ciprofloxacin | Ampicillin/amoxicillin | Macrolides | |
| H influenzae | <45 | 9658 | 7573 (99) | 7461 (94) | 4510 (99) | 8432 (80) | 4623 (18) |
| 45–64 | 18 068 | 15 864 (99) | 14782 (93) | 9150 (99) | 16 868 (77) | 8078 (16) | |
| 65–74 | 15 160 | 13 228 (98) | 12458 (93) | 7852 (99) | 14 292 (76) | 6825 (15) | |
| 75+ | 10 663 | 9363 (99) | 8682 (93) | 5424 (99) | 9921 (74) | 4765 (14) | |
| Unknown | 346 | 314 (98) | 302 (92) | 239 (98) | 321 (79) | 292 (20) | |
| Total | 53 895 | 46 342 (99) | 43 685 (93) | 27 175 (99) | 49834 (77) | 24 583 (15) | |
| Tested (%S) | |||||||
| Age (years) | Total isolates | Tetracyclines | Penicillin* | Ciprofloxacin | Ampicillin/amoxicillin | Macrolides | |
| S pneumoniae | <45 | 2931 | 2218 (92) | 2459 (96) | – | 857 (99) | 2709 (90) |
| 45–64 | 5730 | 4618 (90) | 4778 (95) | – | 1806 (98) | 5288 (87) | |
| 65–74 | 4298 | 3506 (90) | 3506 (94) | – | 1340 (97) | 3920 (86) | |
| 75+ | 3008 | 2426 (91) | 2460 (94) | – | 899 (96) | 2767 (86) | |
| Unknown | 123 | 108 (90) | 40 (93) | – | 17 (100) | 116 (85) | |
| Total | 16 090 | 12 876 (91) | 13 243 (95) | – | 4919 (97) | 13 243 (95) | |
| Tested (%S) | |||||||
| Age (years) | Total isolates | Tetracyclines | Co-amoxiclav | Ciprofloxacin | Ampicillin/amoxicillin | Macrolides | |
| S aureus | <45 | 5618 | 3307 (94) | 487 (89) | 2916 (67) | 229 (33) | 5177 (65) |
| 45–64 | 4403 | 3009 (94) | 431 (80) | 1969 (66) | 289 (23) | 4027 (73) | |
| 65–74 | 3369 | 2381 (95) | 351 (72) | 1533 (60) | 258 (20) | 3073 (72) | |
| 75+ | 3381 | 2298 (94) | 325 (67) | 1654 (44) | 264 (17) | 3051 (63) | |
| unknown | 89 | 75 (97) | 9 (67) | 74 (61) | 7 (29) | 82 (67) | |
| Total | 16 860 | 11 070 (94) | 1603 (78) | 8146 (61) | 1047 (23) | 15 410 (68) | |
| Tested (%S) | |||||||
| Age (years) | Total isolates | Tetracyclines | Co-amoxiclav | Ciprofloxacin | Ampicillin/amoxicillin | Macrolides | |
| MRSA | <45 | 652 | 441 (96) | 54 (4) | 432 (9) | 16 (0) | 512 (20) |
| 45–64 | 851 | 660 (92) | 91 (7) | 554 (6) | 52 (4) | 740 (24) | |
| 65–74 | 780 | 618 (94) | 101 (6) | 494 (3) | 60 (0) | 686 (28) | |
| 75+ | 1151 | 930 (93) | 109 (4) | 782 (1) | 73 (3) | 1013 (22) | |
| unknown | 24 | 16 (94) | 4 (25) | 17 (0) | 3 (0) | 19 (26) | |
| Total | 3458 | 2665 (94) | 359 (5) | 2279 (4) | 204 (2) | 2970 (24) | |
| Tested (%S) | |||||||
| Age (years) | Total isolates | Tetracyclines | Co-amoxiclav | Ciprofloxacin | Ampicillin/amoxicillin | Macrolides | |
| MSSA | <45 | 4668 | 2793 (94) | 429 (100) | 2462 (77) | 210 (34) | 4604 (70) |
| 45–64 | 3306 | 2279 (95) | 339 (99) | 1410 (91) | 237 (27) | 3236 (84) | |
| 65–74 | 2367 | 1685 (95) | 247 (99) | 1033 (87) | 198 (26) | 2330 (85) | |
| 75+ | 2035 | 1315 (95) | 210 (100) | 863 (84) | 187 (22) | 1997 (84) | |
| Unknown | 64 | 59 (98) | 5 (100) | 57 (79) | 4 (50) | 63 (79) | |
| Total | 12 440 | 8131 (95) | 1230 (100) | 5825 (83) | 836 (28) | 12 230 (79) | |
↵* Benzyl-penicillin used as a proxy for co-amoxiclav.
MRSA, methicillin-resistant Staphylococcus aureus; MSSA, methicillin-susceptible Staphylococcus aureus.