2 April 2013: Erratum - Latest ECDC maps on vector distribution introducing enhanced information on spread of mosquitoes, ticks and sandflies in Europe, 21 March 2013 - updated map on geographical distribution of Aedes albopictus mosquito is now available A correction has been applied to the map showing the geographical distribution of the Aedes albopictus mosquito in Europe, published on 21 March 2013.  The Aedes albopictus populations in the Netherlands that were labelled as ‘established’ in the 21 March 2013 version are now displayed as ‘introduced’ in the 2 April 2013 version, indicating that the species has been observed but without confirmed establishment. The regular indoor presence of Aedes albopictus in the Netherlands is limited to man-made artificial settings such as greenhouses with regards to plant importation. The presence and overwintering of these mosquitos in the natural environment is not reported in the Netherlands. ECDC continues to improve data collection for its maps on vector distribution that are published regularly on its website.

Exotic mosquitoes - distribution maps

The map shows the current known distribution of the vector species at ‘regional’ administrative level (NUTS3). It is based only on confirmed data (published and unpublished) provided by experts from the respective countries as part of the VBORNET project.

RED		An established population (evidence of reproduction and overwintering) of the species has been observed in at least one municipality within the administrative unit
YELLOW		The species has been introduced (but without confirmed establishment) in the administrative unit within the last 5 years of the distribution status date
DARK GREEN		Field surveys or studies on mosquitoes were conducted and no introduction (during the last 5 years) or no established population of the species have been reported
MEDIUM GREY		No data for the last 5 years are available to local experts
LIGHT GREY		No information is available about field studies on mosquitoes during the last 5 years.