The tiger mosquitoes were seen in Lansingerland, Westland, Montfoort, Lelystad, Emmeloord, Assen, Breda, Bladel, Sittard and Valkenburg. The yellow fever mosquitoes in Haarlemmermeer (Schiphol) and in Moerdijk.
Exotic mosquitoes have been found in Lelystad for nine years, in Assen for eight years, in Montfoort and Emmeloord for seven years, and in Moerdijk for five years. According to the Stop invasive exotics platform foundation, which keeps track of the mosquito figures, these are importers of used tires in five municipalities. In addition, the insects can be found in so-called Lucky bamboo house plants.
The tiger mosquito and the yellow fever mosquito are animals that do not originate in the Netherlands. They can spread various viral diseases in humans and animals, such as dengue (dengue fever), zika, chikungunya, yellow fever, West Nile virus and various forms of encephalitis.
The NVWA regulator only mentions on the website where and when the exotic mosquitoes have been found. How many mosquitoes were found per find is not on the site. That data will be published on the site in 2021. According to the platform, this may involve large numbers. For example, the NVWA found 350 tiger mosquitoes in Valkenburg last year.
Wilfred Reinhold, chairman of the platform: “The tiger mosquito has been spotted again this year in Valkenburg, twelve finds were made between May 7 and September 22, whereby we do not know how many mosquitoes were caught. When you consider that the NVWA after each find a response action, the problem was quite persistent. “