1. Communicable Diseases, Lake County Health Department and Community Health Center, Waukegan, Illinois
2. Division of Foodborne, Waterborne, and Environmental Diseases, Atlanta, Georgia
3. College of Veterinary Medicine, Washington State University, Pullman, Washington
4. Communicable Diseases Program, Chicago Department of Public Health, Chicago, Illinois
5. Division of Health Quality and Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
6. Group A Streptococcus Laboratory, Centers for Disease Control and Prevention, Atlanta, Georgia
7. Division of Bacterial Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia