1. Department of Environmental, Agricultural, and Occupational Health, University of Nebraska Medical Center, Omaha, Nebraska, USA
2. Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
3. Nebraska Public Health Laboratory, Omaha, Nebraska, USA
4. Department of Emergency Medicine, Division of Emergency Preparedness, Massachusetts General Hospital, Boston, Massachusetts, USA
5. Department of Emergency Medicine, Harvard Medical School, Boston, Massachusetts, USA
6. Department of Pathology and Laboratory Medicine, Emory University, Atlanta, Georgia, USA
7. Department of Medicine, Division of Infectious Diseases, Emory University, Atlanta, Georgia, USA
8. Department of Pediatrics, Columbia University Medical Center, New York, New York, USA
9. Department of Infection Prevention and Control, New York-Presbyterian Hospital, New York, New York, USA
10. Department of Internal Medicine, Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
11. Department of Environmental Health, Indiana University School of Public Health, Bloomington, Indiana, USA