Volume 13, Number 12—December 2007

Perspective

Need for Improved Methods to Collect and Present Spatial Epidemiologic Data for Vectorborne Diseases

Lars Eisen*  and Rebecca J. Eisen†

Author affiliations: *Colorado State University, Fort Collins, Colorado, USA; †Centers for Disease Control and Prevention, Fort Collins, Colorado, USA

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Figure 3

Figure 3. State and county boundaries within the contiguous United States. Note the increasing size of counties from east to west.

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