Author information:
(1)Department of Pediatrics, Division of Pediatric Infectious Diseases, Duke 
Clinical Vaccine Unit, Duke University School of Medicine, Durham, North 
Carolina.
(2)Department of Pediatrics, Durham, North Carolina.
(3)Duke Clinical Vaccine Unit, Duke University Medical Center, Durham, North 
Carolina.
(4)Department of Pediatrics, Division of Infectious Diseases, Cincinnati 
Children's Hospital Medical Center, Ohio.
(5)Department of Pediatrics, Division of Pediatric Infectious Diseases, Duke 
Global Health Institute, Duke Clinical Vaccine Unit, Duke University School of 
Medicine, Durham, North Carolina.