In ECDC´s the "Rapid Risk Assesment" report of 21 January 2016,
Travel-associated cases of Zika virus infections have been reported in the EU in the past . However, EU Member States are not required to report Zika virus infections to ECDC and the data do not reflect the true number of cases diagnosed in the EU/EEA. As the Zika virus epidemic continues to spread in the Americas and Caribbean, and the awareness of the risk of infection increases among clinicians and travellers, the number of reported travel-related Zika virus infections is expected to increase in the EU. As an example, the Netherlands recently reported six cases returning from Suriname.
The Aedes albopictus mosquito species is established in many parts of the EU, primarily around the Mediterranean.(Source ECDC 2015 Nov 20)
Other EU Outermost Regions (OMRs) and Overseas Countries and Territories (OCTs) on other continents where mosquito vectors are present such as La Réunion and Madeira are at risk of establishment of local transmission should the virus be introduced. Madeira is of concern because of the close relationship with Brazil and Venezuela where Zika virus is currently circulating, the presence of Aedes aegypti, and the 2012 dengue epidemic which demonstrated the favourable conditions for vector-borne outbreaks.