Peri-domestic entomological surveillance using private traps allows detection of dengue virus in Aedes albopictus during an autochthonous transmission event in mainland France, late summer 2023.

IF 9.9 2区 医学 Q1 INFECTIOUS DISEASES Eurosurveillance Pub Date : 2024-09-01 DOI:10.2807/1560-7917.ES.2024.29.36.2400195
Barbara Viginier, Raphaëlle Klitting, Clémence Galon, Violaine Bonnefoux, Christophe Bellet, Albin Fontaine, Élise Brottet, Marie-Claire Paty, Armelle Mercurol, Nathalie Ragozin, Sara Moutailler, Gilda Grard, Xavier de Lamballerie, Frédérick Arnaud, Maxime Ratinier, Vincent Raquin
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Abstract

While locally-acquired dengue virus (DENV) human infections occur in mainland France since 2010, data to identify the mosquito species involved and to trace the virus are frequently lacking. Supported by a local network gathering public health agencies and research laboratories, we analysed, in late summer 2023, mosquitoes from privately-owned traps within a French urban neighbourhood affected by a dengue cluster. The cluster, in Auvergne-Rhône-Alpes, comprised three cases, including two autochthonous ones. Upon return from a recent visit to the French Caribbean Islands, the third case had consulted healthcare because of dengue-compatible symptoms, but dengue had not been recognised. For the two autochthonous cases, DENV-specific antibodies in serum or a positive quantitative PCR for DENV confirmed DENV infection. The third case had anti-flavivirus IgMs. No DENV genetic sequences were obtained from affected individuals but Aedes albopictus mosquitoes trapped less than 200 m from the autochthonous cases' residence contained DENV. Genetic data from the mosquito-derived DENV linked the cluster to the 2023-2024 dengue outbreak in the French Caribbean Islands. This study highlights the importance of raising mosquito-borne disease awareness among healthcare professionals. It demonstrates Ae. albopictus as a DENV vector in mainland France and the value of private mosquito traps for entomo-virological surveillance.

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2023 年夏末,在法国本土的一次自发传播事件中,利用私人诱捕器进行的国内昆虫监测可检测到白纹伊蚊体内的登革热病毒。
自 2010 年以来,法国本土出现了本地感染登革热病毒(DENV)的病例,但却经常缺乏用于确定蚊子种类和追踪病毒的数据。在当地公共卫生机构和研究实验室网络的支持下,我们于 2023 年夏末分析了受登革热群集影响的法国城市街区内私人拥有的捕蚊器中的蚊子。该登革热病群位于奥弗涅-罗讷-阿尔卑斯大区,共有三个病例,其中包括两个本地病例。第三个病例最近从法属加勒比群岛访问归来后,因出现登革热相关症状而就医,但未被确诊为登革热。对于这两个本地病例,血清中的登革热特异性抗体或登革热定量 PCR 阳性均证实其感染了登革热病毒。没有从感染者身上获得 DENV 基因序列,但在距离自发病例住所不到 200 米的地方捕获的白纹伊蚊含有 DENV。从蚊子中提取的 DENV 基因数据将该病例群与 2023-2024 年在法属加勒比群岛爆发的登革热疫情联系起来。这项研究强调了提高医疗保健专业人员对蚊媒疾病认识的重要性。它证明了白纹伊蚊是法国本土的一种登革热病毒病媒,以及私人蚊虫诱捕器在昆虫-病毒监测方面的价值。
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来源期刊
Eurosurveillance
Eurosurveillance INFECTIOUS DISEASES-
CiteScore
32.70
自引率
2.10%
发文量
430
审稿时长
3-8 weeks
期刊介绍: Eurosurveillance is a European peer-reviewed journal focusing on the epidemiology, surveillance, prevention, and control of communicable diseases relevant to Europe.It is a weekly online journal, with 50 issues per year published on Thursdays. The journal includes short rapid communications, in-depth research articles, surveillance reports, reviews, and perspective papers. It excels in timely publication of authoritative papers on ongoing outbreaks or other public health events. Under special circumstances when current events need to be urgently communicated to readers for rapid public health action, e-alerts can be released outside of the regular publishing schedule. Additionally, topical compilations and special issues may be provided in PDF format.
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