1. Department of Pediatrics, Division of Pediatric Gastroenterology, Emory University School of Medicine, Children's Healthcare of Atlanta at Egleston,1and
2. Foodborne and Diarrheal Diseases Branch, Division of Bacterial and Mycotic Diseases,2
3. Delft Diagnostic Laboratory, Delft, The Netherlands3
4. Infectious Disease Pathology Activity, Division of Viral and Rickettsial Diseases,4 and
5. Division of Public Health Surveillance and Informatics, Epidemiology Program Office,5
6. National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia; Hospital for Sick Children, Toronto, Ontario, Canada6;
7. Miami Children's Hospital, Miami, Florida7;
8. Rainbow Babies and Children's Hospital, Cleveland, Ohio8; and