1. From the Department of Microbiology and Immunology, University of Rochester School of Medicine, Rochester, New York;
2. Biometry Branch, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland;
3. Department of Pediatrics and the Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, Maryland;
4. Department of Medicine, St Louis University School of Medicine, St Louis, Missouri; Departments of
5. Pediatrics and
6. Preventive Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee;
7. Departments of Microbiology and Immunology and Pediatrics, Baylor College of Medicine, Houston, Texas;
8. International Health and Pediatrics, Johns Hopkins University, Baltimore, Maryland;
9. Department of Microbiology and Immunology, Temple University School of Medicine, and St Christopher's Hospital for Children, Philadelphia, Pennsylvania; and
10. Center for Biologics Evaluation and Research, Food and Drug Administration, Rockville, Maryland.