The bronchoalveolar lavage (done prior to intubation) and two blood cultures (from two different sites drawn at two different times) were positive for MRSA (sensitive only to vancomycin and linezolide). The patient's antibiotics were changed to vancomycin and meropenam (as per glomerular filtration rate calculation using Cockroft and Gault formula). Meropenem was added as an empirical gram negative cover.