A nosocomial outbreak of methicillin-resistant staphylococcus aureus (MRSA) associated with nasal carriage by a physician: R. J. Sherertz, MD, D. S. Reagan, MD, PhD, K. D. Hampton, BS, CIC,∗ K. L. Robertson, LPN, H. M. Hoen, MS, S. A. Streed MS, CIC. Bowman Gray School of Medicine, Winston-Salem, NC; University of Tennessee School of Medicine, Bristol, TN; and North Carolina Baptist Hospitals Inc., Winston-Salem, NC