The last time France reported a autochthonous chikungunya case was in 2010. In 2014, the European country has recorded 11 locally acquired cases to date, according to the Institute de Veille Sanitaire Monday (computer translated).
The 11 indigenous cases of chikungunya have been identified in one area of Montpellier (Hérault) and are a focus of transmission. The first 5 cases of this outbreak was confirmed by the National Reference Centre (CNR) for arboviruses 20 and 22 October. Epidemiological investigations have identified six indigenous cases linked to this outbreak, bringing the total to 11 indigenous cases.
In addition, four locally acquired dengue fever cases have been confirmed by the CNR in the Provence-Alpes-Côte d’Azur.
The first 2 confirmed on 20 August and 11 September occurred in the Var department. They are not related as different serotype (serotype 1 and serotype 2). The 3rd and 4th cases confirmed on 18 September and 3 October in the Bouches du Rhône department are related and form a family. The 2 patients resident in the same neighborhood and have the same dengue serotype: serotype 2. They are not linked to cases of Var.
In total, from May 1 to November 30, 2014, France has seen 1492 suspected cases of dengue or chikungunya.