Zika virus is a member of the Flaviviridae family and is transmitted to humans by mosquitoes. It is related to other pathogenic vector borne flaviviruses including dengue, West-Nile and Japanese encephalitis viruses but produces a comparatively mild disease in humans. In 2007, Zika virus caused an outbreak on the island of Yap in the Pacific.
This was the first documented transmission outside of its traditional endemic areas in Africa and Asia, and Zika virus is considered an emerging infectious disease with the potential to spread to new areas where the Aedes mosquito vector is present.
There is no evidence of transmission Zika virus in Europe to date and imported cases are rare. - ecdc
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