Emerging Infectious Disease ISSN: 1080-6059

West Nile Virus Infections Projected from Blood Donor Screening Data, United States, 2003

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 1

Yield of West Nile virus nucleic acid amplification test (NAT) screening of 4,585,573 donations at American Red Cross and America's Blood Centers (constituting ≈95% of US collections) from July 1 to October 31, 2003. A total of 944 confirmed viremic donations were identified, including 770 that were detectable by minipool-NAT and 174 detectable only by individual donation NAT. MP, minipool; ID, individual donation.

Figure 1. Yield of West Nile virus nucleic acid amplification test (NAT) screening of 4,585,573 donations at American Red Cross and America's Blood Centers (constituting ≈95% of US collections) from July 1 to October 31, 2003. A total of 944 confirmed viremic donations were identified, including 770 that were detectable by minipool-NAT and 174 detectable only by individual donation NAT. MP, minipool; ID, individual donation.

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