Visual summary of the genomes of the vaccine-like recombinant strains and their putative parental strains. Each panel shows a base-by-base comparison of the different sequences with the top sequence that served as the reference. The recombinant strains were compared to both a Neethling-based vaccine strain (A) and a KSGP-based vaccine strain (B). The following colouring scheme was used: perfect match (white), SNP (blue), deletion (red) and insertion (green). P1: parent 1, P2: parent 2, R1: recombinant group 1, R2: recombinant group 2, R3: recombinant group 3, R4: recombinant group 4.