From National Institute of Allergy and Infectious Diseases (PET, MCS, WS), National Institutes of Health, Bethesda, Maryland; Division of Allergy and Immunology (AE), Division of Cardiothoracic Surgery (CME), and Division of Infectious Diseases (DRL), Washington Hospital Center, Washington, DC; and Division of Clinical Immunology (LJM, CC-R), Mount Sinai Medical Center, New York, New York.