<prompt>  There has been an outbreak of infections caused by methicillin resistant Staphylococcus aureus in the surgical intensive care unit. The most effective means of limiting the spread is -Treatment with cephalosporins to which most strains are sensitiveTreatment with naficillin and gentamicin, which have a synergistic effectUse of high-dose naficillin alone and isolationTreatment with glycopeptide 