1. Laboratorio de Arbovirologia, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autonoma de Yucatan, Merida, Mexico.
2. Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa.
3. Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, Iowa.
4. Department of Entomology, College of Agriculture and Life Sciences, Iowa State University, Ames, Iowa.