Fig. 9

Phylogenetic, genetic distance, and recombination analysis of CHV-1. a Phylogenetic network was produced using Splitstree (kimura 2-parameter, gamma = 0.75049, and no p-inverse value). The genetic distance (Mega 6) between group A and group B was 0.34% (Panel a). A genomic similarity plot (RDP4, Panel B) was generated by scanning UK strain 0194 against the remaining CHV-1 strains. A schematic of the CHV-1 genome has been placed above the Simplot graph, with TRL = terminal repeat long, UL = unique long coding region, IRL = internal repeat long, IRS = internal repeat short, US = unique short coding region, and TRS = terminal repeat short. Recombination bootscan analysis (RDP4) of strain 0194 scanned against the remaining EHV-4 strains is shown in panel c. Viral strains in the phylogenetic network (a) are colored according to country of origin (green: Brazil, and blue: UK)