1 Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, CDC.
2 Epidemic Intelligence Service, CDC.
3 Department of Pediatrics, Division of Pediatric Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama.
4 Alabama Department of Public Health.
5 Department of Pediatrics, Division of Pediatric Gastroenterology, Hepatology, and Nutrition, University of Alabama at Birmingham, Birmingham, Alabama.
6 Children's of Alabama, Birmingham, Alabama.
7 Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama.
8 Jefferson County Department of Health, Birmingham, Alabama.
9 Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, CDC.
10 Synergy America, Inc., Duluth, Georgia.
11 Department of Pediatrics, Division of Pediatric Infectious Diseases, Baylor College of Medicine, Houston, Texas.
12 Texas Children's Hospital, Houston, Texas.
13 Wadsworth Center, New York State Department of Health.
14 Department of Biomedical Sciences, University at Albany, Albany, New York.