Fig. (3) Dendrogram of 79 Streptococcus zooepidemicus isolates from Thoroughbred horses in Korea. The dendrogram was constructed with the InfoQuest Character type module software (Ver. 4.5; Bio-Rad) using the UPGMA algorithm with the Dice similarity coefficient. In general, different MLST patterns were observed by year and by region. However, the A1 and A2 subgroups, the 2009 Jeju isolates and the 2007 Jangsu isolates, respectively, showed similar patterns with 94% and 96% homology. * The interrupted line represents an abortion case (mare and aborted fetus).