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. 2024 Nov;29(47):2400713.
doi: 10.2807/1560-7917.ES.2024.29.47.2400713.

Autochthonous dengue outbreak in Marche Region, Central Italy, August to October 2024

Chiara Sacco  1   2 , Augusto Liverani  3 , Giulietta Venturi  1 , Stefano Gavaudan  4 , Flavia Riccardo  1 , Giovanna Salvoni  5 , Claudia Fortuna  1 , Katia Marinelli  6 , Giulia Marsili  1 , Alessia Pesaresi  3 , Carla Molina Grané  7 , Irene Mercuri  3 , Mattia Manica  7 , Sara Caucci  6 , Daniela Morelli  8 , Lolita Sebastianelli  9 , Maurilia Marcacci  8 , Federica Ferraro  10 , Marco Di Luca  1 , Ilaria Pascucci  4 , Christina Merakou  1 , Anna Duranti  4 , Ilaria Pati  11 , Letizia Lombardini  12 , Daniel Fiacchini  13 , Giorgio Filipponi  9 , Francesco Maraglino  10 , Anna Teresa Palamara  1 , Piero Poletti  7 , Patrizio Pezzotti  1 , Fabio Filippetti  9 , Stefano Merler  7 , Martina Del Manso  1 , Stefano Menzo  6 ; Marche dengue outbreak group  14
Collaborators, Affiliations

Autochthonous dengue outbreak in Marche Region, Central Italy, August to October 2024

Chiara Sacco et al. Euro Surveill. 2024 Nov.

Abstract

Between August and 28 October 2024, 199 autochthonous cases of dengue virus serotype 2 were notified in the city of Fano, central Italy. We describe the ongoing epidemiological and microbiological investigation and public health measures implemented to contain the outbreak. The high transmissibility and the extension of the outbreak suggest that dengue should be expected in temperate regions during favourable seasons, highlighting the need for heightened awareness among healthcare providers and the public to ensure timely detection and response.

Keywords: Aedes albopictus; Dengue virus type 2; Italy; autochthonous transmission.

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Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure 1
Figure 1
Epidemic curve of probable and confirmed autochthonous dengue cases and public health measures taken to contain a dengue outbreak, Fano, Italy, August–October 2024 (n = 199)
Figure 2
Figure 2
Geographic distribution of probable and confirmed autochthonous dengue cases, by week of symptom onset, Fano, Italy, August–October 2024 (n = 199)
Figure 3
Figure 3
Neighbour-joining phylogenetic tree of dengue virus 2 isolates from human samples (n = 5) and mosquito pool (n = 1) in a dengue outbreak, Fano, Italy, August–October 2025, compared with global isolatesa
See this image and copyright information in PMC

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