William R. Jarvis is Chief, Investigation and Prevention, Hospital Infections Program at the National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia; Clinical Associate Professor, Division of Pediatric Infectious Diseases, Immunology and Epidemiology, Department of Pediatrics, Emory University School of Medicine; and Associate Professor, Rollins School of Public Health at Emory University School of Medicine, Atlanta, Georgia Nancy H. Arden, R.N.: Professor, Department of Virology, Baylor University School of Medicine, Houston, Texas Arnold J. Berry, M.D., M.

P.H.: Professor, Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia Marc J. M. Bonten, M.D., Ph.D.

: Internist, Department of Internal Medicine, University Hospital Utrecht, Utrecht, The Netherlands Michael T. Brady, M.D.: Vice Chair for Clinical Affairs, Children's Hospital, and Professor, Department of Pediatrics, The Ohio State University, Columbus, Ohio Jay C. Butler, M.D.: Director, Arctic Investigations Program, Centers for Disease Control and Prevention, Anchorage, Alaska Jean Chastre, M.D.

: Professor, Medical Intensive Care Unit, Bichat Hospital, Paris, France Raymond Chinn, M.D., F.A.C.P.: Hospital Epidemiologist, Department of Infectious Disease, Sharp Memorial Hospital, San Diego, California Donald E. Craven, M.

D.: Professor, Department of Infectious Diseases, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts Jean-Yves Fagon, M.D.: Professor and Department Head, Medical Intensive Care Unit, Broussais Hospital, Paris, France Catherine A. Fleming, M.B., M.P.

H.: Instructor, Department of Medicine, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts Robert P. Gaynes, M.D.: Chief, Nosocomial Infections Surveillance Activity, Hospital Infections Program, Centers for Disease Control and Prevention, Atlanta, Georgia Olivia Keita-Perse, M.D.: Nosocomial Infections Surveillance Activity, Hospital Infections Program, Centers for Disease Control and Prevention, Atlanta, Georgia Kathleen A. Steger, R.

N., M.P.H.: Assistant Professor, Boston University School of Medicine, and Associate Director, Clinical AIDS Program, Boston Medical Center, Boston, Massachusetts Jean-Louis Trouillet, M.D.: Medical Intensive Care Unit, Bichat Hospital, Paris, France Robert A. Weinstein, M.

D., F.A.C.P., F.I.D.

S.A.: Chairman, Division of Infectious Diseases, Cook County Hospital, and Professor, Department of Medicine, Rush Medical College, Chicago, Illinois Richard P. Wenzel, M.D., M.Sc.: Professor and Chairman, Department of Internal Medicine, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia Walter W.

Williams: National Immunizations Program, Respiratory Diseases Branch, Centers for Disease Control and Prevention, Atlanta, Georgia Alice H. M. Wong, M.D.: Assistant Professor, Division of Infectious Diseases, Department of Medicine, Royal University Hospital, Saskatoon, Saskatchewan, Canada.