 a methicillin - susceptible staphylococcus aureus with panton  valentine leukocidin ( pvl ) genes was isolated from refractory breast abscesses of 12-year - old girl in japan , and classified into st88 , spa - t1245 and coa - iiia . 
 this strain harboured pvl phage sa2usa , which is usually found in st8 community - acquired methicillin - resistant s.  aureus clone usa300 . 
Conflict of Interest