Zika Virus Infection with Prolonged Maternal Viremia and Fetal Brain Abnormalities.

N Engl J Med

From the Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine (R.W.D., J.T.), and the Department of Pathology (F.J.R.), Johns Hopkins University School of Medicine, Baltimore; the Division of Maternal Fetal Medicine, Sibley Memorial Hospital (R.W.D., J.T., J.R.), the Division of Pathology and Center for Genetic Medicine Research (C.-Y.H., A.R., D.A.H.), Division of Pediatric Infectious Diseases (R.L.D.), Department of Diagnostic Radiology and Imaging (G.V.), and the Fetal Medicine Institute, Division of Fetal and Transitional Medicine (A.P.), Children's National Health System, the Departments of Integrative Systems Biology (C.-Y.H., D.A.H.), Pediatrics and Microbiology, Immunology and Tropical Medicine (R.L.D.B.), and Radiology and Pediatrics (G.V.), George Washington University School of Medicine and Health Sciences, the Center for Policy, Planning and Evaluation (P.I.) and Centers for Disease Control and Prevention (CDC)-Council of State and Territorial Epidemiologists (CSTE) Applied Epidemiology Fellowship (A.H.), District of Columbia Department of Health, and One Medical Group (R.K.) - all in Washington, DC; the Departments of Virology (E.M.K., S.K., T.S., L.L., O.V.) and Veterinary Biosciences (E.M.K., O.V.), University of Helsinki, and the Department of Virology and Immunology, University of Helsinki and Helsinki University Hospital (A.J.J., O.V.), Helsinki; and the Arboviral Diseases Branch, Division of Vector-Borne Diseases, National Center for Emerging Zoonotic Infectious Diseases, CDC, Atlanta (R.L.).

Published: June 2016

The current outbreak of Zika virus (ZIKV) infection has been associated with an apparent increased risk of congenital microcephaly. We describe a case of a pregnant woman and her fetus infected with ZIKV during the 11th gestational week. The fetal head circumference decreased from the 47th percentile to the 24th percentile between 16 and 20 weeks of gestation. ZIKV RNA was identified in maternal serum at 16 and 21 weeks of gestation. At 19 and 20 weeks of gestation, substantial brain abnormalities were detected on ultrasonography and magnetic resonance imaging (MRI) without the presence of microcephaly or intracranial calcifications. On postmortem analysis of the fetal brain, diffuse cerebral cortical thinning, high ZIKV RNA loads, and viral particles were detected, and ZIKV was subsequently isolated.

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http://dx.doi.org/10.1056/NEJMoa1601824	DOI Listing

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