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French authorities reported a cluster of four autochthonous cases of chikungunya infection in Languedoc-Roussillon region, south of France. This is the first report of autochthonous chikungunya virus transmission in France this year.

​On 11 September, authorities in Valencia,Spain acknowledged that the case of Chikungunya reported 3 August 2015 is a false positive. Laboratory investigation conducted by the National Reference laboratory in Madrid did not confirm the initial results.

On 11 August 2017, France gave notification of an autochthonous case of chikungunya virus infection detected in the Var Department in southern France through the Early Warning and Alert System (EWRS).

Since August 2017, France and Italy have reported the autochthonous transmission of chikungunya virus, respectively in the Var department, France and the Lazio region, Italy. The two events are involving strains from different origin and therefore are not related.

Since August 2017, France and Italy have reported the autochthonous transmission of chikungunya virus, respectively in the Var department, France and the Lazio region, Italy. The two events are involving strains from different origin and therefore are not related.