Michael P. Busch*†

, David J. Wright‡, Brian Custer*, Leslie H. Tobler*, Susan L. Stramer§, Steven H. Kleinman*‡¶, Harry E. Prince#, Celso Bianco**, Gregory Foster§, Lyle R. Petersen††, George Nemo‡‡, and Simone A. Glynn‡
Author affiliations: *Blood Systems Research Institute, San Francisco, California, USA; †University of California, San Francisco, California, USA; ‡Westat, Rockville, Maryland, USA; §American Red Cross National Testing and Reference Laboratories, Gaithersburg, Maryland, USA; ¶University of British Columbia, Victoria, British Columbia, Canada; #Focus Diagnostics, Cypress, California, USA; **America's Blood Centers, Washington DC, USA; ††Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; ‡‡National Heart, Lung, and Blood Institute, Bethesda, Maryland, USA
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Figure 4

Figure 4. A) Projected number of West Nile virus (WNV) infections per 1,000 persons. B) Estimated total number of WNV infections per state during 2003 epidemic season.
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