Skip to Main content Skip to Navigation
Journal articles

Potential of Aedes aegypti populations in Madeira Island to transmit dengue and chikungunya viruses

Abstract : Background Aedes spp. mosquitoes mainly transmit the arboviruses dengue virus (DENV) and chikungunya virus (CHIKV) in urban areas, causing a severe public health problem. In 2012-2013, a major dengue outbreak occurred on Madeira Island where the mosquito Aedes aegypti was the only vector. Up to now, the competence of Ae. aegypti populations from Madeira to transmit DENV or CHIKV remains unknown. This study aimed to assess experimentally the ability of Ae. aegypti populations from Madeira to transmit these viruses. Results: By orally exposing mosquitoes to CHIKV (NC/2011-568) and DENV-2 (Bangkok), the vector competence of two field-collected Ae. aegypti populations, i.e. Funchal and Paúl do Mar, was evaluated. We found that both populations were similarly infected and ensured the dissemination and transmission of CHIKV at the same rates. With DENV-2, viral dissemination was significantly higher in the Funchal population compared to Paúl do Mar. We found no significant differences in transmission rates between populations. Results By orally exposing mosquitoes to CHIKV (NC/2011-568) and DENV-2 (Bangkok), the vector competence of two field-collected Ae. aegypti populations, i.e. Funchal and Paúl do Mar, was evaluated. We found that both populations were similarly infected and ensured the dissemination and transmission of CHIKV at the same rates. With DENV-2, viral dissemination was significantly higher in the Funchal population compared to Paúl do Mar. We found no significant differences in transmission rates between populations. Conclusions To our knowledge, this study has demonstrated for the first time the ability of temperate European Ae. aegypti populations from Madeira to transmit DENV and CHIKV. As our results suggest, there is a potential risk for the local transmission of DENV and CHIKV if introduced to Madeira or continental Europe where Aedes albopictus is present. Our results highlight the need for continuing vector surveillance and control on Madeira Island to future-proof the Island against mosquito-borne epidemics.
Document type :
Journal articles
Complete list of metadatas

Cited literature [38 references]  Display  Hide  Download

https://hal-pasteur.archives-ouvertes.fr/pasteur-01890223
Contributor : Marie Demeslay Gougam <>
Submitted on : Monday, October 8, 2018 - 2:26:13 PM
Last modification on : Thursday, June 4, 2020 - 6:26:03 PM
Long-term archiving on: : Wednesday, January 9, 2019 - 4:41:26 PM

File

Potential of Aedes aegypti..vi...
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

Gonçalo Seixas, Henri Jupille, Pei-Shi Yen, Bela Viveiros, Anna-Bella Failloux, et al.. Potential of Aedes aegypti populations in Madeira Island to transmit dengue and chikungunya viruses. Parasites and Vectors, BioMed Central, 2018, 11 (1), pp.509. ⟨10.1186/s13071-018-3081-4⟩. ⟨pasteur-01890223⟩

Share

Metrics

Record views

262

Files downloads

381