MRSA Variant in Companion Animals
Figure. . Minimum spanning tree based on multilocus sequence typing data from 4,197 Staphylococcus aureus strains (A) and an enlarged view of 1 phylogenetic group (B). Each circle represents a distinct sequence type (ST), and circle size is proportional to ST frequency. Green indicates mecALGA251-positive S. aureus strains of companion animal origin reported in this study and sequence data from published multilocus sequence typing results (3–5); red indicates ST599 methicillin-resistant S. aureus; and blue represents ST2024 methicillin-sensitive S. aureus isolated from a wild rat.