Borderline susceptibility to methicillin in Staphylococcus aureus: a new mechanism of resistance?

Abstract excerpt

Staphylococcus aureus strains with borderline levels of susceptibility or resistance to antistaphylococcal penicillinase-resistant penicillins (PRPs) were initially reported as neither heteroresistant nor multiply resistant organisms, producing large amounts of beta-lactamase, and becoming fully susceptible to PRPs in the presence of beta-lactamase inhibitors. This borderline susceptibility or low-level...

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