1. 1Department of Medicine, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland;
2. 2Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis, Minnesota;
3. 3HealthPartners Institute, HealthPartners Travel and Tropical Medicine Center, Minneapolis, Minnesota;
4. 4Department of Microbiology and Immunology, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland;
5. 5Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, Minnesota;
6. 6Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota;
7. 7Center for Global Health and Social Responsibility, School of Public Health, University of Minnesota, Minneapolis, Minnesota