Abstract
We report dengue virus (DENV) infection in two Dutch tourists who visited Département Var, southern France, in July and August 2020. As some autochthonous dengue cases have occurred in Europe in recent years, awareness among physicians and public health experts about possible intermittent presence of DENV in southern Europe is important to minimise delay in diagnosis and treatment. Quick diagnosis can lead to timely action to contain the spread of vector-borne diseases and minimise transmission.
Highlights
A previously healthy woman in her 20s (Patient 1) spent a 2-week holiday with relatives in La Croix Valmer, France, from 13 to 31 July 2020
The patient was vaccinated according to the Dutch national vaccination scheme; she had never received any vaccinations for yellow fever, Japanese encephalitis or tick-borne encephalitis
On August 27, upon confirmation of the serological results, Patient 1 was reported by the RIVM to the French authorities through the Early Warning and Response System of the European Union as an autochthonous dengue virus (DENV) infection probably acquired in France with cross-border implication
Summary
Autochthonous dengue in two Dutch tourists visiting Département Var, southern France, July 2020. We report dengue virus (DENV) infection in two Dutch tourists who visited Département Var, southern France, in July and August 2020. When we diagnosed dengue in a Dutch tourist who visited southern France, we coordinated joint action between the patient and clinical and public health experts. This led to rapid international notification and consecutive outbreak control efforts by French authorities. The patient was vaccinated according to the Dutch national vaccination scheme; she had never received any vaccinations for yellow fever, Japanese encephalitis or tick-borne encephalitis One of her family members upon our clinical suspicion of dengue virus infection spontaneously acknowledged having seen tiger mosquitoes (Aedes albopictus) around their holiday home.
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