Committee Members: Jon S. Abramson, MD (Chairman), Wake Forest University School of Medicine, Winston–Salem, North Carolina; Larry K. Pickering, MD (Executive Secretary), Centers for Disease Control and Prevention, Atlanta, Georgia; Ban Mishu Allos, MD, Vanderbilt University School of Medicine, Nashville, Tennessee; Carol Baker, MD, Baylor College of Medicine, Houston, Texas; Robert L. Beck, JD, Palmyra, Virginia; Janet R. Gilsdorf, MD, University of Michigan, Ann Arbor, Michigan; Harry Hull, MD, St. Paul, Minnesota; Susan Lett, MD, MPH, Massachusetts Department of Public Health, Jamaica Plain, Massachusetts; Tracy Lieu, MD, MPH, Harvard Pilgrim Health Care and Harvard Medical School, Boston, Massachusetts; Gina T. Mootrey, DO, MPH (Lead Staff, ACIP Adult Immunization Working Group), Centers for Disease Control and Prevention, Atlanta, Georgia; Julia Morita, MD, Chicago Department of Public Health, Chicago, Illinois; Dale L. Morse, MD, New York State Department of Health, Albany, New York; Kathleen Neuzil, MD, MPH, University of Washington, Seattle, Washington; Patricia Stinchfield, NP, Children's Hospitals and Clinics of Minnesota, St. Paul, Minnesota; Ciro Valent Sumaya, MD, MPH, Texas A&M University System Health Science Center, College Station, Texas; John J. Treanor, MD, University of Rochester School of Medicine and Dentistry, Rochester, New York; and Robin J. Womeodu, MD, Methodist Healthcare University Hospital, Memphis, Tennessee