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. 2023 Nov;28(44):2300552.
doi: 10.2807/1560-7917.ES.2023.28.44.2300552.

Outbreaks of autochthonous Dengue in Lazio region, Italy, August to September 2023: preliminary investigation

Gabriella De Carli  1   2 , Fabrizio Carletti  1   3 , Martina Spaziante  2 , Cesare Ernesto Maria Gruber  3 , Martina Rueca  3 , Pietro Giorgio Spezia  3 , Valentina Vantaggio  2 , Alessandra Barca  4 , Claudio De Liberato  5 , Federico Romiti  5 , Maria Teresa Scicluna  6 , Stefania Vaglio  7 , Mariano Feccia  8 , Enrico Di Rosa  9 , Francesco Paolo Gianzi  10 , Cristina Giambi  11 , Paola Scognamiglio  4   2 , Emanuele Nicastri  1   12 , Enrico Girardi  13 , Fabrizio Maggi  3 , Francesco Vairo  2 ; Lazio Dengue Outbreak Group  14 ; Lazio dengue Outbreak Group
Collaborators, Affiliations

Outbreaks of autochthonous Dengue in Lazio region, Italy, August to September 2023: preliminary investigation

Gabriella De Carli et al. Euro Surveill. 2023 Nov.

Abstract

Between August and September 2023, three distinct autochthonous dengue virus transmission events occurred in Lazio, Italy, with the main event in Rome. The events involved three different dengue serotypes. No link with previous imported cases was identified. Here we describe the epidemiological and phylogenetic analysis of the first autochthonous cases and the implemented control actions. The multiple transmission events call for a strengthening of the vector control strategies and future research to better characterise the risk in countries like Italy.

Keywords: Dengue; Italy; aedes albopictus; autochthonous; one-health approach; outbreak; phylogenetic analysis; vector control.

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Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure
Figure
Maximum likelihood phylogenetic trees of dengue virus outbreak isolates, Italy, at 19 September (n = 6) and dengue virus isolate of imported case (INMI-I1)
See this image and copyright information in PMC

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