Correlation of West Nile Virus Incidence in Donated Blood with West Nile Neuroinvasive Disease Rates, United States, 2010–2012
Edouard Betsem, Zhanna Kaidarova, Susan L. Stramer, Beth Shaz, Merlyn Sayers, German LeParc, Brian S. Custer, Michael P. Busch
, and Edward L. Murphy
Author affiliations: University of Yaounde 1 Faculty of Medicine and Biomedical Sciences, Yaounde, Cameroon (E. Betsem); Agence de Médecine Préventive, Bobo-Dioulasso, Burkina Faso (E. Betsem); Blood Systems Research Institute, San Francisco, California, USA (E. Betsem, Z. Kaidarova, B. Custer, M.P. Busch, E.L. Murphy); American Red Cross, Gaithersburg, Maryland, USA (S.L. Stramer); New York Blood Center, New York, New York, USA (B. Shaz); Carter BloodCare, Bedford, Texas, USA (M. Sayers); University of Texas Southwestern Medical Center, Dallas, Texas, USA (M. Sayers); OneBlood, St. Petersburg, Florida, USA (G. LeParc); University of California, San Francisco (B. Custer, M.P. Busch, E.L. Murphy)
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Figure 4
Figure 4. Projected West Nile virus (WNV) incidence (per 100,000 population) versus neuroinvasive disease (NID) case rates (per 100,000 population) by state, United States, 2010–2012. Each dot within each panel represents 1 state. A) Data for 2010. Data from 30 states were excluded: 11 states with no donors testing positive by nucleic acid testing (NAT) and no NID cases; 17 states with 1–26 NID cases but no NAT-positive donors; and 2 states with 1 and 2 NAT-positive donors, respectively, but no reported NID cases (R2 = 0.83). B) Data for 2011. Data from 27 states were excluded: 8 states with neither NAT testing yield nor NID cases and 19 states with 1–31 NID cases but no NAT yield (R2 = 0.83). C) Data for 2012. Data from 15 states were excluded: 3 states with neither NAT testing yield nor NID cases and 12 states with 1–62 neuroinvasive cases but no NAT yield (R2 = 0.79).
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