Figure 2From: Group A streptococci clones associated with invasive infections and pharyngitis in Portugal present differences in emm types, superantigen gene content and antimicrobial resistancePFGE clusters found among 160 invasive isolates and 320 pharyngitis isolates. Approximately 11% of invasive and 16% of non-invasive isolates were included in PFGE clusters of ≤ 5 isolates that are not represented. The asterisk indicates significant differences (P<0.001).Back to article page