Use of Blood Donor Screening Data to Estimate Zika Virus Incidence, Puerto Rico, April–August 2016
Michelle S. Chevalier
, Brad J. Biggerstaff, Sridhar V. Basavaraju, M. Cheryl Bañez Ocfemia, Jose O. Alsina, Consuelo Climent-Peris, Robin R. Moseley, Koo-Whang Chung, Brenda Rivera-García, Melissa Bello-Pagán, Lisa L. Pate, Susan A. Galel, Phillip Williamson, and Matthew J. Kuehnert
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (M.S. Chevalier, S.V. Basavaraju, M.C. Bañez Ocfemia, R.R. Moseley, K.-W. Chung, M.J. Kuehnert); Centers for Disease Control and Prevention, Fort Collins, Colorado, USA (B.J. Biggerstaff); Banco de Sangre de Servicios Mutuos, San Juan, Puerto Rico (J.O. Alsina); Banco de Sangre del Centro Medico of the Administración de Servicios Médicos, San Juan (C. Climent-Peris); Puerto Rico Department of Health, San Juan (B. Rivera-García, M. Bello-Pagán); Roche Molecular Systems, Inc., Pleasanton, California, USA (L.L. Pate, S.A. Galel); Creative Testing Solutions, Tempe, Arizona, USA (P. Williamson)
Figure 1. Individual weekly estimates of the number and percentage of at-risk population with incident Zika virus infections computed with cobas Zika (Roche Molecular Systems, Inc., Pleasanton, CA, USA) individual nucleic acid testing results from Banco de Sangre de Servicios Mutuos and Banco de Sangre del Centro Médico de la Administración de Servicios Médicos, Puerto Rico, April 3–August 12, 2016. These estimates assume a mean viremia duration of 9.9 days (SD ± 3.9). To retain readability of the point estimates, some of the confidence interval line segments extend beyond the vertical boundary. Data for August 1–August 12, 2016 available only for Banco de Sangre de Servicios Mutuos. Error bars indicate 95% CIs.
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