1. Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
2. Department of Medicine, Division of Epidemiology, Vanderbilt University, Nashville, Tennessee, USA
3. Tennessee Department of Health, Nashville, Tennessee, USA
4. Minnesota Department of Health, Saint Paul, Minnesota, USA
5. Connecticut Department of Public Health, Hartford, Connecticut, USA
6. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
7. Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, USA
8. Connecticut Emerging Infections Program, Yale School of Public Health, New Haven, Connecticut, USA
9. Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
10. Department of Pathology, Rush University Medical Center, Chicago, Illinois, USA