Dengue alert: Italy increases security measures at airports and ports. Climate change and travel are largely responsible for the spread of dengue fever in Europe.
Only the tiny Aedes mosquitoes, also known as tiger mosquitoes, transmit the virus to people. Experts warn that the imported animals could spread even in winter. The eggs could survive the winter in Europe and also in Germany and larvae could hatch when it is warmer. In 2023, Italy reported 82 locally transmitted infections, France 43 and Spain 3.