[Dengue outbreaks in the French West-Indies in a context of arbovirosis emergence and reemergence].

In the French West Indies (Martinique, Guadeloupe and French Guyana), dengue represents a model of a reemerging arbovirosis, with hyperendemicity and more severe cases and deaths than previously observed Co-circulation of the four serotypes, the increasing number of cases during interepidemic periods, and the increase in severe forms (particularly hemorrhagic forms), are signs of forthcoming hyperendemicity. DEN-2 is the viral subtype most frequently associated with severe forms. Other arboviroses, like West Nile disease and chikungunya, overflowing from their usual geographical areas and with the potential to cause hemorrhagic syndromes and encephalitis, have emerged or reemerged in tropical zones of Africa, Asia, America and the Indian Ocean, but also in temperate areas of northern America and southern Europe. The risk of imported arboviroses, particularly dengue and chikungunya, is a real threat in temperate countries, including southern France, where Aedes albopictus, a vector mosquito, is present.