1. Center for Vectorborne Diseases, Department of Pathology, Microbiology and Immunology, University of California, Davis, California.
2. Vector-Borne Disease Section, California Department of Public Health, Sacramento, California.
3. Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado.
4. Sacramento–Yolo Mosquito and Vector Control District, Elk Grove, California.
5. Coachella Valley Mosquito and Vector Control District, Indio, California.
6. Kern Mosquito and Vector Control District, Bakersfield, California.
7. Fogarty International Center, National Institutes of Health, Bethesda, Maryland.