Volume 17, Number 8—August 2011
Research
Early Warning System for West Nile Virus Risk Areas, California, USA
Figure 1
![California counties with 2005 Dynamic Continuous-Area Space-Time (DYCAST) analysis regions (32,517 km2), shown in black. Data were mapped by using ArcMap version 9.3.1 (Environmental Systems Research Institute, Inc., Redlands, CA, USA) and North American Datum of 1983, High Accuracy Reference Network (NAD83 HARN) California II State Plane coordinate system (Lambert Conformal Conic Projection).](/eid/images/10-0411-F1.jpg)
Figure 1. California counties with 2005 Dynamic Continuous-Area Space-Time (DYCAST) analysis regions (32,517 km2), shown in black. Data were mapped by using ArcMap version 9.3.1 (Environmental Systems Research Institute, Inc., Redlands, CA, USA) and North American Datum of 1983, High Accuracy Reference Network (NAD83 HARN) California II State Plane coordinate system (Lambert Conformal Conic Projection).
1Current affiliation: Brown University, Providence, Rhode Island, USA.
2Current affiliation: University of British Columbia, Vancouver, British Columbia, Canada.
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