1. Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, TX 77555-0609, USA
2. Sealy Center for Vaccine Development, University of Texas Medical Branch, Galveston, TX 77555-0609, USA
3. Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555-0609, USA
4. Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555-0609, USA
5. Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555-0609, USA
6. Texas Department of State Health Services, Austin, TX, USA
7. Harris County Public Health and Environmental Services, Mosquito Control Division, 3330 Old Spanish Trail, Houston, TX 77021, USA
8. Laboratory Medicine, Philadelphia VA Medical Center, 3900 Woodland Avenue, Philadelphia, PA 19104, USA