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Volume 21, Number 4—April 2015
Dispatch

West Nile Virus Infection Incidence Based on Donated Blood Samples and Neuroinvasive Disease Reports, Northern Texas, USA, 2012

Diana T. CervantesComments to Author , Shande Chen, Laurie J. Sutor, Shelley Stonecipher, Nicolette Janoski, David J. Wright, and Edward L. Murphy
Author affiliations: Texas Department of State Health Services, Arlington, Texas, USA (D.T. Cervantes, S. Stonecipher); The University of North Texas Health Science Center, Fort Worth, Texas, USA (S. Chen); Carter BloodCare, Bedford, Texas, USA (L.J. Sutor); Tarrant County Public Health, Fort Worth (N. Janoski); Westat, Rockville, Maryland, USA (D. Wright); Blood Systems Research Institute, San Francisco, California, USA (M.P. Busch)

Main Article

Table 1

Blood donor NAT yield model derived West Nile Virus infection estimates, northern Texas, 2012*

Model type No. samples tested Person-months† No. WNV RNA+ donations Viremic donations/10,000 donations Incidence/10,000 donor months % Population infected (95% CI) Estimated no. infections (95% CI)
MP-NAT
 118,593
 41,604.76
 30
 2.5
 7.2
 0.72 (0.44–1.00) 31,013 (19,133–42,893)
ID-NAT 15,134 9,725.46 24 15.9 24.7

*NAT, Nucleic acid amplification technology
†Person-months =  number of donations tested multiplied by WNV RNA detection period/30.5.

Main Article

Page created: March 17, 2015
Page updated: March 17, 2015
Page reviewed: March 17, 2015
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