sentences:  MRSA, or methicillin-resistant "Staphylococcus aureus" is a strain that has acquired resistance to cefoxitin via this gene.For the purposes of detecting bacterial strains with the mecC gene, which like mecA codes for a different PBP, cefoxitin is more reliable than oxacillin because mecC does not correlate as strongly with oxacillin resistance.Cefoxitin's spectrum of "in vitro" antimicrobial activity includes a broad range of gram-negative and gram-positive bacteria, including anaerobes.