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In vitro antimicrobial susceptibility of community-associated S. aureus. White bars, CA-MRSA (n = 102); gray bars, USA300 subset of CA-MRSA (n = 49); black bars, CA-MSSA (n = 102). The susceptibilities of the CA-MSSA isolates to ciprofloxacin, tetracycline, and rifampin were not tested. *, P < 0.05 compared with the results for CA-MRSA.
