1. Arizona Department of Health Services, Phoenix, Arizona, USA.
2. Maricopa County Department of Public Health, Phoenix, Arizona, USA.
3. Epidemic Intelligence Service, Division of Scientific Education and Professional Development, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
4. Arboviral Diseases Branch, Centers for Disease Control and Prevention, Fort Collins, Colorado, USA.
5. Career Epidemiology Field Officer Program, Center for Preparedness and Response, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
6. Arizona State Public Health Laboratory, Arizona Department of Health Services, Phoenix, Arizona, USA.
7. Vector Control Division, Maricopa County Environmental Services Department, Phoenix, Arizona, USA.
8. Epidemiology Elective Program, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.