Well lot of work on the topic has been published. Being Microbiologist all i can comment is the fact that labs should be able to follow the CLSI guidelines in the identification of MRSA. Our experience is that we have about 50-60% of all staph aureus isolates being MRSA. The most common clinical specimen submitted with us is Pus and pus swab implicating that wound infections caused by MRSA are tremendous. in addition to hosp acquired infections MRSA can also cause community acquired infections. Linezolid has shown excellent in vitro efficacy against MRSA isolates.