Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025

In March 2025, as part of ongoing enhanced surveillance for mosquito-borne Orthoflaviviruses, West Nile virus (WNV) RNA was detected in two pools of female Aedes vexans collected in July 2023 in Nottinghamshire, England. Sequencing and phylogenetic analysis of a 402 bp fragment indicate clustering w...

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Main Author: Arran J Folly
Format: Article
Language:English
Published: European Centre for Disease Prevention and Control 2025-07-01
Series:Eurosurveillance
Subjects:
Online Access:https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.28.2500401
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author Arran J Folly
author_facet Arran J Folly
author_sort Arran J Folly
collection DOAJ
description In March 2025, as part of ongoing enhanced surveillance for mosquito-borne Orthoflaviviruses, West Nile virus (WNV) RNA was detected in two pools of female Aedes vexans collected in July 2023 in Nottinghamshire, England. Sequencing and phylogenetic analysis of a 402 bp fragment indicate clustering with WNV lineage 1a. The exact origin of this virus remains unclear, but this finding indicates a historic WNV presence in the United Kingdom. Surveillance has not provided evidence of further WNV transmission to date.
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spelling doaj-art-5d4e3d360cdc4e7fa2cd4d1941909e412025-08-20T03:51:25ZengEuropean Centre for Disease Prevention and ControlEurosurveillance1560-79172025-07-01302810.2807/1560-7917.ES.2025.30.28.2500401http://instance.metastore.ingenta.com/content/eurosurveillance/30/28Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025Arran J Folly0Animal and Plant Health Agency, Addlestone, United KingdomIn March 2025, as part of ongoing enhanced surveillance for mosquito-borne Orthoflaviviruses, West Nile virus (WNV) RNA was detected in two pools of female Aedes vexans collected in July 2023 in Nottinghamshire, England. Sequencing and phylogenetic analysis of a 402 bp fragment indicate clustering with WNV lineage 1a. The exact origin of this virus remains unclear, but this finding indicates a historic WNV presence in the United Kingdom. Surveillance has not provided evidence of further WNV transmission to date.https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.28.2500401xenosurveillanceemerging infectious diseaseOrthoflavivirusAedes vexans
spellingShingle Arran J Folly
Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025
Eurosurveillance
xenosurveillance
emerging infectious disease
Orthoflavivirus
Aedes vexans
title Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025
title_full Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025
title_fullStr Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025
title_full_unstemmed Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025
title_short Detection of West Nile virus via retrospective mosquito arbovirus surveillance, United Kingdom, 2025
title_sort detection of west nile virus via retrospective mosquito arbovirus surveillance united kingdom 2025
topic xenosurveillance
emerging infectious disease
Orthoflavivirus
Aedes vexans
url https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.28.2500401
work_keys_str_mv AT arranjfolly detectionofwestnilevirusviaretrospectivemosquitoarbovirussurveillanceunitedkingdom2025