1. Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
2. Georgia Emerging Infections Program, Atlanta
3. Division of Bacterial Diseases, US Centers for Disease Control and Prevention, Atlanta, Georgia
4. Atlanta VA Medical Center, Decatur, Georgia
5. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
6. Georgia Department of Public Health, Atlanta