TABLE 2.
Distribution of mefA subclass mefA and subclass mefE genes among 42 S. pneumoniae isolates by serotypes or groups and clones
| Serotype [%] (no. of strains) | PFGE pattern | No. of strains of each subclass of mefA gene
|
Resistance patterna | |
|---|---|---|---|---|
| mefE | mefA | |||
| Nontypeable (18 [40.5]) | Unrelatedb | 2 | E | |
| 1 | EC | |||
| 2 | ESxT | |||
| 5 | ET | |||
| 3 | PE | |||
| 5 | PESxT | |||
| 14 (14 [33.3]) | Spain9V-3c | 7 | PESxT | |
| England14-9 | 4 | E | ||
| Unrelated | 2 | PESxT | ||
| Unrelated | 1 | E | ||
| 23F (4 [9.5]) | Unrelated | 1 | PESxT | |
| 1 | PE | |||
| 1 | E | |||
| 1 | PETSxT | |||
| 3 (1) | Unrelated | 1 | EC | |
| 6A (1) | Unrelated | 1 | E | |
| 6B (1) | Unrelated | 1 | E | |
| 10 (1) | Unrelated | 1 | E | |
| 19A (1) | Unrelated | 1 | PE | |
| 23A (1) | Unrelated | 1 | E | |
a
P, penicillin resistant; E, erythromycin resistant; SxT, cotrimoxazole resistant; T, tetracycline resistant; C, chloramphenicol resistant.
b
PFGE patterns unrelated to international PMEN clones (15) represented by a single isolate.
c
Capsular switching.