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

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

^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; MLS_B, presenting the MLS_B phenotype of macrolide resistance; Tet, non-susceptibility to tetracycline; M,Tet, presenting the M phenotype of macrolide resistance and resistance to tetracycline; MLS_B,Tet, presenting the MLS_B phenotype of macrolide resistance and resistance to tetracycline; MLS_B,Bac, presenting the MLS_B phenotype of macrolide resistance and resistance to bacitracin.

ISSN: 1471-2180