scholarly journals A Full-Length Infectious cDNA Clone of Zika Virus from the 2015 Epidemic in Brazil as a Genetic Platform for Studies of Virus-Host Interactions and Vaccine Development

mBio ◽  
2016 ◽  
Vol 7 (4) ◽  
Author(s):  
Konstantin A. Tsetsarkin ◽  
Heather Kenney ◽  
Rubing Chen ◽  
Guangping Liu ◽  
Hasmik Manukyan ◽  
...  
Keyword(s):  
Vero Cell ◽  
Cell Lines ◽  
Cdna Clone ◽  
Zika Virus ◽  
Reverse Genetics ◽  
Vaccine Development ◽  
Infectious Cdna Clone ◽  
Guillain Barre Syndrome ◽  
Perinatal Development ◽  
Guillain Barré

ABSTRACTAn arthropod-borne virus, Zika virus (ZIKV), has recently emerged as a major human pathogen. Associated with complications during perinatal development and Guillain-Barré syndrome in adults, ZIKV raises new challenges for understanding the molecular determinants of flavivirus pathogenesis. This underscores the necessity for the development of a reverse genetic system based on an epidemic ZIKV strain. Here, we describe the generation and characterization in cell cultures of an infectious cDNA clone of ZIKV isolated from the 2015 epidemic in Brazil. The cDNA-derived ZIKV replicated efficiently in a variety of cell lines, including those of both neuronal and placental origin. We observed that the growth of cDNA-derived virus was attenuated compared to the growth of the parental isolate in most cell lines, which correlates with substantial differences in sequence heterogeneity between these viruses that were determined by deep-sequencing analysis. Our findings support the role of genetic diversity in maintaining the replicative fitness of viral populations under changing conditions. Moreover, these results indicate that caution should be exercised when interpreting the results of reverse-genetics experiments in attempts to accurately predict the biology of natural viruses. Finally, a Vero cell-adapted cDNA clone of ZIKV was generated that can be used as a convenient platform for studies aimed at the development of ZIKV vaccines and therapeutics.IMPORTANCEThe availability of genetic tools and laboratory models determines the progress in understanding mechanisms of virus emergence and pathogenesis. Recent large-scale outbreaks of Zika virus (ZIKV) that were linked to complications during perinatal development and Guillain-Barré syndrome in adults emphasize the urgency for the development of a reverse-genetics system based on an epidemic ZIKV strain. Here, we report a stable infectious cDNA clone for ZIKV isolated during the 2015 epidemic in Brazil, as well as a Vero cell-adapted version of it, which will be used for virus-host interaction studies and vaccine development.

scholarly journals In vivo rescue of recombinant Zika virus from an infectious cDNA clone and its implications in vaccine development

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Gines Ávila-Pérez ◽  
Aitor Nogales ◽  
Jun-Gyu Park ◽  
Desarey Morales Vasquez ◽  
David A. Dean ◽  
...  
Keyword(s):  
Cdna Clone ◽  
Zika Virus ◽  
Vaccine Development ◽  
Infectious Cdna Clone

scholarly journals Zika Virus and the Guillain–Barré Syndrome — Case Series from Seven Countries

2016 ◽  
Vol 375 (16) ◽  
pp. 1598-1601 ◽  
Author(s):  
Thais dos Santos ◽  
Angel Rodriguez ◽  
Maria Almiron ◽  
Antonio Sanhueza ◽  
Pilar Ramon ◽  
...  
Keyword(s):  
Zika Virus ◽  
Case Series ◽  
Guillain Barre Syndrome ◽  
Guillain Barré Syndrome ◽  
Guillain Barré

scholarly journals Zika Virus Infection as a Cause of Congenital Brain Abnormalities and Guillain–Barré Syndrome: Systematic Review

PLoS Medicine ◽  
2017 ◽  
Vol 14 (1) ◽  
pp. e1002203 ◽  
Author(s):  
Fabienne Krauer ◽  
Maurane Riesen ◽  
Ludovic Reveiz ◽  
Olufemi T. Oladapo ◽  
Ruth Martínez-Vega ◽  
...  
Keyword(s):  
Systematic Review ◽  
Virus Infection ◽  
Zika Virus ◽  
Guillain Barre Syndrome ◽  
Brain Abnormalities ◽  
Zika Virus Infection ◽  
Guillain Barré Syndrome ◽  
Guillain Barré

scholarly journals Transmission dynamics of Zika virus in island populations: a modelling analysis of the 2013-14 French Polynesia outbreak

2016 ◽  
Author(s):  
Adam J. Kucharski ◽  
Sebastian Funk ◽  
Rosalind M. Eggo ◽  
Henri-Pierre Mallet ◽  
W. John Edmunds ◽  
...  
Keyword(s):  
South America ◽  
Dengue Virus ◽  
Zika Virus ◽  
French Polynesia ◽  
Neurological Complications ◽  
Transmission Dynamics ◽  
Guillain Barre Syndrome ◽  
Island Populations ◽  
The Pacific ◽  
Guillain Barré

AbstractBetween October 2013 and April 2014, more than 30,000 cases of Zika virus (ZIKV) disease were estimated to have attended healthcare facilities in French Polynesia. ZIKV has also been reported in Africa and Asia, and in 2015 the virus spread to South America and the Caribbean. Infection with ZIKV has been associated with neurological complications including Guillain-Barré Syndrome (GBS) and microcephaly, which led the World Health Organization to declare a Public Health Emergency of International Concern in February 2015. To better understand the transmission dynamics of ZIKV, we used a mathematical model to examine the 2013–14 outbreak on the six major archipelagos of French Polynesia. Our median estimates for the basic reproduction number ranged from 2.6–4.8, with an estimated 11.5% (95% CI: 7.32–17.9%) of total infections reported. As a result, we estimated that 94% (95% CI: 91–97%) of the total population of the six archipelagos were infected during the outbreak. Based on the demography of French Polynesia, our results imply that if ZIKV infection provides complete protection against future infection, it would take 12–20 years before there are a sufficient number of susceptible individuals for ZIKV to reemerge, which is on the same timescale as the circulation of dengue virus serotypes in the region. Our analysis suggests that ZIKV may exhibit similar dynamics to dengue virus in island populations, with transmission characterized by large, sporadic outbreaks with a high proportion of asymptomatic or unreported cases.Author SummarySince the first reported major outbreak of Zika virus disease in Micronesia in 2007, the virus has caused outbreaks throughout the Pacific and South America. Transmitted by the Aedes species of mosquitoes, the virus has been linked to possible neurological complications including Guillain-Barre Syndrome and microcephaly. To improve our understanding of the transmission dynamics of Zika virus in island populations, we analysed the 2013–14 outbreak on the six major archipelagos of French Polynesia. We found evidence that Zika virus infected the majority of population, but only around 12% of total infections on the archipelagos were reported as cases. If infection with Zika virus generates lifelong immunity, we estimate that it would take at least 15–20 years before there are enough susceptible people for the virus to reemerge. Our results suggest that Zika virus could exhibit similar dynamics to dengue virus in the Pacific, producing large but sporadic outbreaks in small island populations.

scholarly journals Whole-Genome Sequences of Zika Virus FLR Strains after Passage in Vero or C6/36 Cells

2018 ◽  
Vol 6 (4) ◽  
Author(s):  
Lindsey A. Moser ◽  
Lauren M. Oldfield ◽  
Nadia Fedorova ◽  
Vinita Puri ◽  
Susmita Shrivastava ◽  
...  
Keyword(s):  
Vero Cell ◽  
Cell Lines ◽  
Virus Strain ◽  
Zika Virus ◽  
Whole Genome ◽  
Genome Sequences ◽  
Complete Genomes ◽  
Vero Cell Lines

ABSTRACT We report 26 complete genomes of Zika virus (ZIKV) isolated after passaging the Zika virus strain FLR in mosquito (C6/36) and mammalian (Vero) cell lines. The consensus ZIKV genomes we recovered show greater than 99% nucleotide identify with each other and with the FLR strain used as input.

scholarly journals The re-emergence of Zika in Brazil in 2020: a case of Guillain Barré Syndrome during the low season for arboviral infections

2020 ◽  
Vol 27 (7) ◽  
Author(s):  
Kevan M Akrami ◽  
Betania Mara Freitas de Nogueira ◽  
Mateus Santana do Rosário ◽  
Laise de Moraes ◽  
Marli Tenório Cordeiro ◽  
...  
Keyword(s):  
Zika Virus ◽  
Guillain Barre Syndrome ◽  
Guillain Barré Syndrome ◽  
Guillain Barré

Zika virus cases in Brazil have diminished since emergence in 2015. We report Guillain Barré Syndrome caused by Zika and possible Chikungunya co-infection during an expected low arboviral season. This case highlights the importance of clinical vigilance for Zika in those with neurological syndromes outside typical arboviral season.

scholarly journals Zika virus infection as a cause of congenital brain abnormalities and Guillain-Barré syndrome: From systematic review to living systematic review

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 196 ◽  
Author(s):  
Michel Jacques Counotte ◽  
Dianne Egli-Gany ◽  
Maurane Riesen ◽  
Million Abraha ◽  
Teegwendé Valérie Porgo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Zika Virus ◽  
Congenital Abnormalities ◽  
Causal Link ◽  
The Body ◽  
Guillain Barre Syndrome ◽  
Sufficient Evidence ◽  
Zikv Infection ◽  
Guillain Barré Syndrome ◽  
Guillain Barré

Background. The Zika virus (ZIKV) outbreak in the Americas has caused international concern due to neurological sequelae linked to the infection, such as microcephaly and Guillain-Barré syndrome (GBS). The World Health Organization stated that there is “sufficient evidence to conclude that Zika virus is a cause of congenital abnormalities and is a trigger of GBS”. This conclusion was based on a systematic review of the evidence published until 30.05.2016. Since then, the body of evidence has grown substantially, leading to this update of that systematic review with new evidence published from 30.05.2016 – 18.01.2017, update 1. Methods. We review evidence on the causal link between ZIKV infection and adverse congenital outcomes and the causal link between ZIKV infection and GBS or immune-mediated thrombocytopaenia purpura. We also describe the transition of the review into a living systematic review, a review that is continually updated. Results. Between 30.05.2016 and 18.01.2017, we identified 2413 publications, of which 101 publications were included. The evidence added in this update confirms the conclusion of a causal association between ZIKV and adverse congenital outcomes. New findings expand the evidence base in the dimensions of biological plausibility, strength of association, animal experiments and specificity. For GBS, the body of evidence has grown during the search period for update 1, but only for dimensions that were already populated in the previous version. There is still a limited understanding of the biological pathways that potentially cause the occurrence of autoimmune disease following ZIKV infection. Conclusions. This systematic review confirms previous conclusions that ZIKV is a cause of congenital abnormalities, including microcephaly, and is a trigger of GBS. The transition to living systematic review techniques and methodology provides a proof of concept for the use of these methods to synthesise evidence about an emerging pathogen such as ZIKV.

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