Journal Article

Zika virus-associated neurological disorders: a review

Abelardo Q. C. Araujo, Marcus Tulius T. Silva and Alexandra P. Q. C. Araujo

in Brain

Published on behalf of The Guarantors of Brain

Volume 139, issue 8, pages 2122-2130
Published in print August 2016 | ISSN: 0006-8950
Published online June 2016 | e-ISSN: 1460-2156 | DOI: https://dx.doi.org/10.1093/brain/aww158
Zika virus-associated neurological disorders: a review

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  • Sensory and Motor Systems
  • Neuropathology
  • Disorders of the Nervous System

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Zika virus, an arbovirus transmitted by mosquitoes of the Aedes species, is now rapidly disseminating throughout the Americas and the ongoing Brazilian outbreak is the largest Zika virus epidemic so far described. In addition to being associated with a non-specific acute febrile illness, a number of neurological manifestations, mainly microcephaly and Guillain-Barré syndrome, have been associated with infection. These with other rarer neurological conditions suggest that Zika virus, similar to other flaviviruses, is neuropathogenic. The surge of Zika virus-related microcephaly cases in Brazil has received much attention and the role of the virus in this and in other neurological manifestations is growing. Zika virus has been shown to be transmitted perinatally and the virus can be detected in amniotic fluid, placenta and foetus brain tissue. A significant increase in Guillain-Barré syndrome incidence has also been reported during this, as well as in previous outbreaks. More recently, meningoencephalitis and myelitis have also been reported following Zika virus infection. In summary, while preliminary studies have suggested a clear relationship between Zika virus infection and certain neurological conditions, only longitudinal studies in this epidemic, as well as experimental studies either in animal models or in vitro, will help to better understand the role of the virus and the pathogenesis of these disorders.

Keywords: Zika virus; arbovirus; microcephaly; Guillain-Barré syndrome; neurological complications

Journal Article.  6055 words.  Illustrated.

Subjects: Sensory and Motor Systems ; Neuropathology ; Disorders of the Nervous System

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