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Table 1 PFGE clusters presenting antimicrobial resistant isolates collected from invasive infections and pharyngitis in Portugal

From: Group A streptococci clones associated with invasive infections and pharyngitis in Portugal present differences in emm types, superantigen gene content and antimicrobial resistance

PFGE clustera Antimicrobial resistanceb 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
  1. a Clusters are designated by capital letters and a subscript number indicating the number of isolates in each cluster;
  2. 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.