FIG. 3.

Diagram of the QRDRs of gyrA and parC in isolates showing recombination events. The box on the left represents the gyrA QRDR, while that on the right represents the parC QRDR. White boxes represent regions that are characteristic of S. dysgalactiae subsp. equisimilis, while black boxes represent regions characteristic of S. pyogenes. Each allele combination represents the sequences resulting from the putative recombination events indicated in Fig. 1 (T₁ to T₃). Recombination breakpoints were determined by the maximum χ² method implemented in RDP3 software, refined by visual inspection of the sequences (Table 3).