Noninvasive detection of Zika virus in mosquito excreta sampled from wild mosquito populations in French Guiana
2024
Guidez, Amandine | Fontaine, Albin | Yousfi, Léna | Moutailler, Sara | Carinci, Romuald | Issaly, Jean | Gaborit, Pascal | Cannet, Arnaud | de Laval, Franck | Matheus, Séverine | Rousset, Dominique | Dusfour, Isabelle | Girod, Romain | Briolant, Sébastien | Institut Pasteur de la Guyane ; Pasteur Network (Réseau International des Instituts Pasteur) | Institut de Recherche Biomédicale des Armées [Antenne Marseille] (IRBA) | Vecteurs - Infections tropicales et méditerranéennes (VITROME) ; Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge] (IRBA) | Institut Hospitalier Universitaire Méditerranée Infection (IHU Marseille) | Biologie moléculaire et immunologie parasitaires et fongiques (BIPAR) ; École nationale vétérinaire d'Alfort (ENVA)-Laboratoire de santé animale, sites de Maisons-Alfort et de Normandie ; Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Centre national d'expertise des vecteurs [Montpellier, France] (CNEV) | Centre d'épidémiologie et de santé publique des armées [Marseille] (CESPA) ; Service de Santé des Armées | Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC) ; Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie])-Université de Montpellier (UM) | Département de Santé Globale - Department Global Health ; Institut Pasteur [Paris] (IP)-Université Paris Cité (UPCité) | This study received funding from Regional Health Agency of French Guiana (Conventions n° FIR/ARS/2014/91, n° FIR/ARS/2015/68) and was supported by the European Union’s Horizon 2020 Research and Innovation Programme under ZIKAlliance Grant Agreement no. 734548. | European Project: 734548,ZIKAlliance(2016)
International audience
Show more [+] Less [-]English. Arboviruses can be difficult to detect in the field due to relatively low prevalence in mosquito populations. The discovery that infected mosquitoes can release viruses in both their saliva and excreta gave rise to low-cost methods for the detection of arboviruses during entomological surveillance. We implemented both saliva and excreta-based entomological surveillance during the emergence of Zika virus (ZIKV) in French Guiana in 2016 by trapping mosquitoes around households of symptomatic cases with confirmed ZIKV infection. ZIKV was detected in mosquito excreta and not in mosquito saliva in 1 trap collection out of 85 (1.2%). One female Ae. aegypti L. (Diptera: Culicidae) was found with a ZIKV systemic infection in the corresponding trap. The lag time between symptom onset in a ZIKV-infected individual living near the trap site and ZIKV detection in this mosquito was 1 wk. These results highlight the potential of detection in excreta from trapped mosquitoes as a sensitive and cost-effective method to non invasively detect arbovirus circulation.
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