The prevalence rate of these OX(S)-FOX(R) MRSA isolates could be up to around 1% in all MRSA isolates and usually belong to SCCmec type V and spa type t437-ST59 or t1081-ST45 in Central Taiwan.
Patients with OX(S)-FOX(R) MRSA infections and responses to treatment did not always receive effective antimicrobial agents according to the susceptibility results.
Concomitant testing using both cefoxitin- and oxacillin-based methods, but not oxacillin alone, is a reasonable and practical strategy for OS-MRSA detection.