Figure 4

Maximum likelihood tree of all 66 cases. (a) Maximum likelihood tree of all 66 South Korean cases that were sequenced. The church cluster (cluster 6) is marked by blue brackets, and the hospital cluster (cluster 7) is marked by light blue. The branch support values of the tree using the SH-like likelihood ratio test were estimated as around 1. The most recent common ancestor sequence of clusters 6 and 7 is presented by blue circle and the strain that shared two common mutation markers with this ancestor is presented by red circle. (b) Star-like phylogeny of the 37 church cluster cases (cluster 6, dark blue in (a)) (c) Star-like phylogeny of the 11 hospital cluster cases (cluster 7, light blue in (a)).