Division of Bacterial, Parasitic and Allergenic Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Department of Bioengineering and ChEM-H, Stanford University, Department of Bioengineering and ChEM-H, Stanford University, Department of Bioengineering and ChEM-H, Stanford University, Division of Infectious Diseases, Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Division of Infectious Diseases, Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Division of Bacterial, Parasitic and Allergenic Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Division of Bacterial, Parasitic and Allergenic Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Division of Viral Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Government of the United States of America - Division of Viral Products, Division of Infectious Diseases, Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Department of Bioengineering and ChEM-H, Stanford University and Government of the United States of America - Division of Bacterial, Parasitic and Allergenic Products