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Molecular epidemiology identifies the expansion of the DENV2 epidemic lineage from the French Caribbean Islands to French Guiana and mainland France, 2023 to 2024
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View Affiliations Hide AffiliationsRaphaëlle Klittingraphaelle.klitting inserm.fr
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Arbovirus genomics diagnostic laboratories working group members: Laura Verdurme, Marie Hervo, Alexia Barbry, Pierre Bancons, Valérie Suez-Panama, Isabelle Komla-Soukha, Jean-François Carod, Magalie Demar, Didier Musso, Alain Berlioz-Arthaud, Sandra Fabienne, Kate Lebouteiller, Esther Christine, Michèle Adélaïde, Fabrice Ghisalberti, Anne Ligneureux, Céline Ben Cimon, Mahery Ramiandrisoa, Geoffrey Masson, Paul SéraphinView Citation Hide Citation
Citation style for this article: . Molecular epidemiology identifies the expansion of the DENV2 epidemic lineage from the French Caribbean Islands to French Guiana and mainland France, 2023 to 2024. Euro Surveill. 2024;29(13):pii=2400123. https://doi.org/10.2807/1560-7917.ES.2024.29.13.2400123 Received: 28 Feb 2024; Accepted: 27 Mar 2024
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Abstract
In 2023, dengue virus serotype 2 (DENV2) affected most French overseas territories. In the French Caribbean Islands, viral circulation continues with > 30,000 suspected infections by March 2024. Genome sequence analysis reveals that the epidemic lineage in the French Caribbean islands has also become established in French Guiana but not Réunion. It has moreover seeded autochthonous circulation events in mainland France. To guide prevention of further inter-territorial spread and DENV introduction in non-endemic settings, continued molecular surveillance and mosquito control are essential.
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