Dry winters and springs continue to suppress mosquito populations in Sweden. Researchers at the National Veterinary Institute predict another season with unusually few mosquitoes.
Anders Lindström, a researcher at the National Veterinary Institute, states that soil moisture is extremely low in many parts of the country. This leads to significantly fewer mosquitoes than normal during the summer of 2026.
The past two summers have shown the same pattern after dry periods. In contrast, 2024 was a mosquito-rich summer that prompted extra state grants of five million kronor for control measures.
The government has now allocated an additional five million kronor to the institute for monitoring new mosquito species moving northward. The focus is on species that can spread diseases such as West Nile fever. Lindström notes that milder winters favor these species despite the dry soil.
