Estimated Zika virus importations to Europe by travellers from Brazil

Background: Given the interconnectivity of Brazil with the rest of the world, Zika virus (ZIKV) infections have the potential to spread rapidly around the world via viremic travellers. The extent of spread depends on the travel volume and the endemicity in the exporting country. In the absence of re...

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Main Authors: Eduardo Massad, Ser-Han Tan, Kamran Khan, Annelies Wilder-Smith
Format: Article
Language:English
Published: Taylor & Francis Group 2016-05-01
Series:Global Health Action
Subjects:
Online Access:http://www.globalhealthaction.net/index.php/gha/article/view/31669/pdf_276
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author Eduardo Massad
Ser-Han Tan
Kamran Khan
Annelies Wilder-Smith
author_facet Eduardo Massad
Ser-Han Tan
Kamran Khan
Annelies Wilder-Smith
author_sort Eduardo Massad
collection DOAJ
description Background: Given the interconnectivity of Brazil with the rest of the world, Zika virus (ZIKV) infections have the potential to spread rapidly around the world via viremic travellers. The extent of spread depends on the travel volume and the endemicity in the exporting country. In the absence of reliable surveillance data, we did mathematical modelling to estimate the number of importations of ZIKV from Brazil into Europe. Design: We applied a previously developed mathematical model on importations of dengue to estimate the number of ZIKV importations into Europe, based on the travel volume, the probability of being infected at the time of travel, the population size of Brazil, and the estimated incidence of ZIKV infections. Results: Our model estimated between 508 and 1,778 imported infections into Europe in 2016, of which we would expect between 116 and 355 symptomatic Zika infections; with the highest number of importations being into France, Portugal and Italy. Conclusions: Our model identified high-risk countries in Europe. Such data can assist policymakers and public health professionals in estimating the extent of importations in order to prepare for the scale up of laboratory diagnostic assays and estimate the occurrence of Guillain–Barré Syndrome, potential sexual transmission, and infants with congenital ZIKV syndrome.
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spelling doaj.art-bd90ea69fc934f2c94605dc8833793e92022-12-21T22:23:41ZengTaylor & Francis GroupGlobal Health Action1654-98802016-05-01901710.3402/gha.v9.3166931669Estimated Zika virus importations to Europe by travellers from BrazilEduardo Massad0Ser-Han Tan1Kamran Khan2Annelies Wilder-Smith3 Department of Medicine, University of Sao Paolo, Sao Paolo, Brazil School of Computer Engineering, Nanyang Technological University, Singapore Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Canada Institute of Public Health, University of Heidelberg, GermanyBackground: Given the interconnectivity of Brazil with the rest of the world, Zika virus (ZIKV) infections have the potential to spread rapidly around the world via viremic travellers. The extent of spread depends on the travel volume and the endemicity in the exporting country. In the absence of reliable surveillance data, we did mathematical modelling to estimate the number of importations of ZIKV from Brazil into Europe. Design: We applied a previously developed mathematical model on importations of dengue to estimate the number of ZIKV importations into Europe, based on the travel volume, the probability of being infected at the time of travel, the population size of Brazil, and the estimated incidence of ZIKV infections. Results: Our model estimated between 508 and 1,778 imported infections into Europe in 2016, of which we would expect between 116 and 355 symptomatic Zika infections; with the highest number of importations being into France, Portugal and Italy. Conclusions: Our model identified high-risk countries in Europe. Such data can assist policymakers and public health professionals in estimating the extent of importations in order to prepare for the scale up of laboratory diagnostic assays and estimate the occurrence of Guillain–Barré Syndrome, potential sexual transmission, and infants with congenital ZIKV syndrome.http://www.globalhealthaction.net/index.php/gha/article/view/31669/pdf_276Zika virustravelimportationsBrazilEurope
spellingShingle Eduardo Massad
Ser-Han Tan
Kamran Khan
Annelies Wilder-Smith
Estimated Zika virus importations to Europe by travellers from Brazil
Global Health Action
Zika virus
travel
importations
Brazil
Europe
title Estimated Zika virus importations to Europe by travellers from Brazil
title_full Estimated Zika virus importations to Europe by travellers from Brazil
title_fullStr Estimated Zika virus importations to Europe by travellers from Brazil
title_full_unstemmed Estimated Zika virus importations to Europe by travellers from Brazil
title_short Estimated Zika virus importations to Europe by travellers from Brazil
title_sort estimated zika virus importations to europe by travellers from brazil
topic Zika virus
travel
importations
Brazil
Europe
url http://www.globalhealthaction.net/index.php/gha/article/view/31669/pdf_276
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