Information on autochthonous vectorial transmission of dengue in mainland EU/EEA, including location, period, number of cases, virus serotype and mode of transmission.
Chikungunya is not endemic in the EU/EEA and the majority of the cases are travellers infected outside of the EU/EEA. When the environmental conditions are favourable, in areas where Ae. albopictus is established, viraemic travel-related cases may generate a local transmission of the virus as demonstrated by the sporadic events of chikungunya virus transmission since 2007.