Table 1.
PFGE clusters presenting antimicrobial resistant isolates collected from invasive infections and pharyngitis in Portugal
| PFGE cluster a | Antimicrobial resistance b |
No. of resistant isolates |
|
|---|---|---|---|
| Invasive | Pharyngitis | ||
| C38 |
Tet |
|
1 |
| D36 |
MLSB |
|
1 |
| M |
|
1 |
|
| G27 |
M |
6 |
19 |
| M,Tet |
1 |
|
|
| H26 |
MLSB,Bac |
6 |
17 |
| Tet |
|
1 |
|
| I24 |
MLSB,Tet |
|
1 |
| J16 |
Tet |
12 |
1 |
| K14 |
M |
|
1 |
| L13 |
MLSB,Tet |
1 |
6 |
| Tet |
2 |
|
|
| M11 |
MLSB,Tet |
1 |
|
| N10 |
Tet |
1 |
1 |
| MLSB,Tet |
|
1 |
|
| O9 |
M |
4 |
5 |
| R6 |
M |
|
3 |
| S6 | M | 1 | |
a Clusters are designated by capital letters and a subscript number indicating the number of isolates in each cluster;
b The antibiotics tested were penicillin quinupristin/dalfopristin, chloramphenicol, vancomycin, linezolid, levofloxacin, erythromycin, clindamycin, tetracycline, and bacitracin. M, presenting the M phenotype of macrolide resistance; MLSB, presenting the MLSB phenotype of macrolide resistance; Tet, non-susceptibility to tetracycline; M,Tet, presenting the M phenotype of macrolide resistance and resistance to tetracycline; MLSB,Tet, presenting the MLSB phenotype of macrolide resistance and resistance to tetracycline; MLSB,Bac, presenting the MLSB phenotype of macrolide resistance and resistance to bacitracin.