1 Division of Infectious Diseases, Department of Pediatrics, Nationwide Children's Hospital-The Ohio State University College of Medicine, Columbus, OH, USA; Center for Vaccines & Immunity, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA. Electronic address: Asuncion.Mejias@nationwidechildrens.org.
2 Division of Pediatric Infectious Diseases, Puerta del Mar University Hospital, Cadiz, Spain.
3 Division of Infectious Diseases, Department of Pediatrics, Nationwide Children's Hospital-The Ohio State University College of Medicine, Columbus, OH, USA; Center for Vaccines & Immunity, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
4 Division of Infectious Diseases, Department of Pediatrics, Nationwide Children's Hospital-The Ohio State University College of Medicine, Columbus, OH, USA; Center for Perinatal Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA; Department of Pediatrics, Division of Neonatology, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, USA.