<prompt> A diabetic patient developed cellulite is due to S. aureus, which was found to be methicillin resistant on the antibiotic sensitivity testing. All of the following antibiotics will be appropriate except:VancomycinImipenemTeicoplaninLinezolid  <response>: Ans. is b i.e., ImipenemRef: Harrison, 18the, p. 1168 and 17the, p. 879The carbapenem imipenem has excellent activity against methicillin - sensitive S. aureus but not M.R.S.A. Because MRSA is resistant to all Beta-lactam antibiotics including cephalosporins and carbapenems. 