While the investigators do not anticipate a problem with non-response or missing values, to take this into consideration, we will over-sample the above sample size by 10%. Therefore, we will recruit at least 152 patients to the study. Therefore, assuming 80% power, an estimated prevalence of 10%, and a precision level of 5%, 152 patients are needed to be 95% confident that the true proportion of MRSA in adult patients (>17yrs old) presenting with skin or soft tissue infections will be between 5% and 15%.