Genetic distance reveals that KOS63 and KOSDavido cluster separately from KOS79 in a global collection of HSV-1 strains.
We extended a prior dendrogram analysis of 26 HSV-1 strains of global distribution (42) to include strains KOS63 and KOS79. KOS63 and the originally-included KOSDavido strain both cluster with HSV-1 strains of Asian origin, while KOS79 groups with HSV-1 strains of European and North American origin. Dendrogram was calculated with UPGMA in MEGA (1,000 bootstrap replicates). Branch confidence values are indicated on the tree. Scale bar indicates the number of nucleotide substitutions per kilobase.