Table 4. Proportions of isolates with triple resistance to penicillin, erythromycin and tetracycline among frequent serotypes of Streptococcus pneumoniae from blood and cerebrospinal fluid infections, Public Health England surveillance, 2005–2014 (n = 13,551).
| Serotype | Total | Triple resistance | % Triple resistance |
|---|---|---|---|
| 15A | 330 | 104 | 31.5 |
| 6B | 420 | 51 | 12.1 |
| 19F | 401 | 45 | 11.2 |
| 19A | 987 | 83 | 8.4 |
| 23F | 360 | 15 | 4.2 |
| 24F | 124 | 5 | 4.0 |
| 9V | 562 | 19 | 3.4 |
| 14 | 1,145 | 27 | 2.4 |
| 6A | 366 | 3 | 0.8 |
| 8 | 1,197 | 3 | 0.3 |
| 6C | 205 | 2 | 1.0 |
| 9N | 261 | 1 | 0.4 |
| 3 | 777 | 2 | 0.3 |
| 33F | 239 | 2 | 0.8 |
| 1 | 1,195 | 1 | 0.1 |
| 22F | 761 | 1 | 0.1 |
| 12F | 474 | 1 | 0.2 |
| 4 | 334 | 0 | 0 |
| 7F | 1,155 | 0 | 0 |
| All others | 2,258 | 0 | 0 |
| All isolates and serotypes | 13,551 | 469 | 3.5 |
99% of isolates are from England, Wales and Northern Ireland, with the remaining few from Scotland, Crown Dependencies, Republic of Ireland and elsewhere.
Serotypes that reached a top-10 ranking in any surveillance year in Table 3 are line-listed.