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Dengue is a viral illness transmitted by mosquito bites and it is present in more than 125 countries around the world, mainly in urban and residential areas in tropical and subtropical zones.
In recent years, the rate of dengue has increased significantly around the world. It is estimated that there are around 390 million dengue infections around the world each year.
In Europe, most cases are imported following a trip to an endemic zone (which is common).
In Spain, there are around 200 imported cases of dengue each year. In recent years, the first cases of autochthonous dengue have been described in Spain (in people with no history of travel), in regions where the tiger mosquito (Ae. albopictus), which is able to transmit the disease, is present.
Dengue is distributed by Latin America, Africa, Asia and Pacific Islands.