Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny

ABSTRACTAedes albopictus mosquitoes have been experimentally demonstrated to be a competent vector for Zika virus (ZIKV) in different countries, but there are still some gaps related to the importance of Ae. albopictus in ZIKV transmission. Recent studies on Spanish Ae. albopictus populations showed...

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Main Authors: Ana I. Nuñez, Sandra Talavera, Lotty Birnberg, Raquel Rivas, Núria Pujol, Marta Verdún, Carles Aranda, Miguel Berdugo, Núria Busquets
Format: Article
Language:English
Published: Taylor & Francis Group 2020-01-01
Series:Emerging Microbes and Infections
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/22221751.2020.1830718
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author Ana I. Nuñez
Sandra Talavera
Lotty Birnberg
Raquel Rivas
Núria Pujol
Marta Verdún
Carles Aranda
Miguel Berdugo
Núria Busquets
author_facet Ana I. Nuñez
Sandra Talavera
Lotty Birnberg
Raquel Rivas
Núria Pujol
Marta Verdún
Carles Aranda
Miguel Berdugo
Núria Busquets
author_sort Ana I. Nuñez
collection DOAJ
description ABSTRACTAedes albopictus mosquitoes have been experimentally demonstrated to be a competent vector for Zika virus (ZIKV) in different countries, but there are still some gaps related to the importance of Ae. albopictus in ZIKV transmission. Recent studies on Spanish Ae. albopictus populations showed controversial results for ZIKV transmission and no studies have been performed yet to detect infectious ZIKV in saliva of progeny of infected female mosquitoes. Herein, the horizontal transmission (HT) and vertical transmission (VT) of ZIKV in field-collected Ae. albopictus mosquitoes from Spain were evaluated for ZIKV strains (African I and Asian lineages) to better estimate the risk of ZIKV transmission by Ae. albopictus. The two field-collected Ae. albopictus populations assayed were infected by all tested ZIKV strains, however differences in terms of vector competence were detected depending on strain-population combination. Moreover, a higher susceptibility to the African I lineage strain than to the Asian lineage strain was observed in both mosquito populations. On the other hand, VT was demonstrated for both ZIKV lineages, detecting the virus in both males and females of the progeny of infected females, although importantly ZIKV dissemination and transmission were not detected in the infected females from the offspring. The results of the present study demonstrate that Spanish Ae. albopictus populations could sustain virus transmission in case of ZIKV introduction, but VT would play a poor role in the ZIKV epidemiology. Overall, our results provide helpful information to health authorities to establish efficient surveillance and vector control programmes for ZIKV.
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spelling doaj.art-b3fb7ff39fa847e3a6c543e61c9861a42024-03-11T16:04:23ZengTaylor & Francis GroupEmerging Microbes and Infections2222-17512020-01-01912236224410.1080/22221751.2020.1830718Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progenyAna I. Nuñez0Sandra Talavera1Lotty Birnberg2Raquel Rivas3Núria Pujol4Marta Verdún5Carles Aranda6Miguel Berdugo7Núria Busquets8IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainInstitut de Biología evolutiva de Barcelona, Universidad Pompeu Fabra-CSIC, Dr. Aigüader 88, Barcelona, 08003, SpainIRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, Bellaterra, 08193, SpainABSTRACTAedes albopictus mosquitoes have been experimentally demonstrated to be a competent vector for Zika virus (ZIKV) in different countries, but there are still some gaps related to the importance of Ae. albopictus in ZIKV transmission. Recent studies on Spanish Ae. albopictus populations showed controversial results for ZIKV transmission and no studies have been performed yet to detect infectious ZIKV in saliva of progeny of infected female mosquitoes. Herein, the horizontal transmission (HT) and vertical transmission (VT) of ZIKV in field-collected Ae. albopictus mosquitoes from Spain were evaluated for ZIKV strains (African I and Asian lineages) to better estimate the risk of ZIKV transmission by Ae. albopictus. The two field-collected Ae. albopictus populations assayed were infected by all tested ZIKV strains, however differences in terms of vector competence were detected depending on strain-population combination. Moreover, a higher susceptibility to the African I lineage strain than to the Asian lineage strain was observed in both mosquito populations. On the other hand, VT was demonstrated for both ZIKV lineages, detecting the virus in both males and females of the progeny of infected females, although importantly ZIKV dissemination and transmission were not detected in the infected females from the offspring. The results of the present study demonstrate that Spanish Ae. albopictus populations could sustain virus transmission in case of ZIKV introduction, but VT would play a poor role in the ZIKV epidemiology. Overall, our results provide helpful information to health authorities to establish efficient surveillance and vector control programmes for ZIKV.https://www.tandfonline.com/doi/10.1080/22221751.2020.1830718Zika virusAedes albopictusvector competencevertical transmission
spellingShingle Ana I. Nuñez
Sandra Talavera
Lotty Birnberg
Raquel Rivas
Núria Pujol
Marta Verdún
Carles Aranda
Miguel Berdugo
Núria Busquets
Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny
Emerging Microbes and Infections
Zika virus
Aedes albopictus
vector competence
vertical transmission
title Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny
title_full Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny
title_fullStr Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny
title_full_unstemmed Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny
title_short Evidence of Zika virus horizontal and vertical transmission in Aedes albopictus from Spain but not infectious virus in saliva of the progeny
title_sort evidence of zika virus horizontal and vertical transmission in aedes albopictus from spain but not infectious virus in saliva of the progeny
topic Zika virus
Aedes albopictus
vector competence
vertical transmission
url https://www.tandfonline.com/doi/10.1080/22221751.2020.1830718
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