1. Institute for Human Infections and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
2. Center for Tropical Diseases, University of Texas Medical Branch, Galveston, Texas, USA
3. Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
4. World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, Texas, USA
5. Department of Biology, Indiana University, Bloomington, Indiana, USA