PFGE 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).
Friães et al. BMC Microbiology 2012 12:280 doi:10.1186/1471-2180-12-280