2026-04-13T22:45:03Zhttps://recercat.cat/oai/request

oai:recercat.cat:11351/59202025-10-24T10:35:22Zcom_2072_378070com_2072_378040col_2072_378092

Sentinel surveillance of imported dengue via travellers to Europe 2012 to 2014: TropNet data from the DengueTools Research Initiative Neumayr, Andreas Muñoz, Jose Bottieau, Emmanuel Cramer, Jakob Calleri, Guido Serre Delcor, Nuria Sulleiro Igual, Elena Schunk, Mirjam Dengue - Transmissió Salut pública DISEASES::Virus Diseases::Arbovirus Infections::Dengue Other subheadings::Other subheadings::Other subheadings::/transmission ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT::Investigative Techniques::Epidemiologic Methods::Investigative Techniques::Epidemiologic Methods::Sentinel Surveillance ENFERMEDADES::virosis::infecciones por arbovirus::dengue Otros calificadores::Otros calificadores::Otros calificadores::/transmisión TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS::técnicas de investigación::métodos epidemiológicos::técnicas de investigación::métodos epidemiológicos::vigilancia centinela Dengue; Vigilància; Importació Dengue; Vigilancia; Importación Dengue; Surveillance; Importation We describe the epidemiological pattern and genetic characteristics of 242 acute dengue infections imported to Europe by returning travellers from 2012 to 2014. The overall geographical pattern of imported dengue (South-east Asia > Americas > western Pacific region > Africa) remained stable compared with 1999 to 2010. We isolated the majority of dengue virus genotypes and epidemic lineages causing outbreaks and epidemics in Asia, America and Africa during the study period. Travellers acted as sentinels for four unusual dengue outbreaks (Madeira, 2012–13; Luanda, 2013; Dar es Salaam, 2014; Tokyo, 2014). We were able to characterise dengue viruses imported from regions where currently no virological surveillance data are available. Up to 36% of travellers infected with dengue while travelling returned during the acute phase of the infection (up to 7 days after symptom onset) or became symptomatic after returning to Europe, and 58% of the patients with acute dengue infection were viraemic when seeking medical care. Epidemiological and virological data from dengue-infected international travellers can add an important layer to global surveillance efforts. A considerable number of dengue-infected travellers are viraemic after arrival back home, which poses a risk for dengue introduction and autochthonous transmission in European regions where suitable mosquito vectors are prevalent. 2025-10-24T10:35:22Z 2025-10-24T10:35:22Z 2025-10-24T10:35:22Z 2021-04-28T10:43:21Z 2021-04-28T10:43:21Z 2017-01-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/11351/5920 Eurosurveillance;22(1) https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2017.22.1.30433 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess European Centre for Disease Prevention and Control Scientia