TABLE 1.
MRSA isolates (n = 114) used to determine whether the Xpert MRSA kit could detect all strains of MRSA prevalent in Ireland
| MLST (no. of isolates) | SCCmec typeb | AR type (no. of isolates)c |
|---|---|---|
| ST5d (10) | II | 07.3d (3); 07.4 (5); 11 (2) |
| ST5 (1) | IV | Unfamiliare (1) |
| ST8f (11) | IV or IVv | 43 (8); Unfamiliare (3f) |
| ST8 (26) | II or IIv | 13 (7); 14 (15); New03 (3); 05 (1) |
| ST12 (1) | IV | NT (1) |
| ST22 (14) | IV | 06 (13); NT (1) |
| ST30 (2) | IV | NT (2) |
| ST34 (1) | IV | NT (1) |
| ST36 (3) | II | 07.0 (2); 07.2 (1) |
| ST45 (1) | IV | NT (1) |
| ST239 (13) | III or IIIv | 01 (4); 09 (3); 15 (2); 44 (3); 23 (1) |
| ST247 (3) | IA | 22 (2); New02 (1) |
| ST250 (4) | I or Iv | 02 (4) |
| —a (6) | — | 07 (2); New02 (1); 06 (1); SCV (2) |
| — (18) | — | PVL-positive community-acquired MRSA (18) |
a
—, not done.
c
Antibiogram-resistogram (AR) types were determined from the patterns of resistance obtained when isolates were tested by disk diffusion against a panel of 23 antimicrobials as described previously (17). NT indicates AR patterns that were designated “no type” pending the results of DNA macrorestriction digestion analysis; PVL, Panton-Valentine leucocidin; SCV, small-colony variant.
d
One isolate was a double-locus variant of ST5.
e
Unfamiliar AR pattern.
f
Two isolates were single-locus variants of ST8.