1. Department of Tropical Medicine, Vector-Borne and Infectious Disease Research Center, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA.
2. Department of Biomedical Sciences, School of Medicine, Tulane University, New Orleans, Louisiana, USA.
3. New Mexico Emerging Infections Program, University of New Mexico, SE Albuquerque, New Mexico.
4. Department of Veterinary Clinical Services, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, USA.
5. Department of Pathobiological Sciences, Louisiana Animal Disease Diagnostic Laboratory, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, USA.