An invasive species of mosquito has set up home in 13 countries in the EU, including France, Spain and Greece, with experts linking their presence to a rise in dengue fever in Europe.
Climate change is creating favourable conditions for the tiger mosquito to spread, said the European Centre for Disease Prevention and Control (ECDC).
As far north as Paris, where the Olympic Games will take place at the end of July, authorities have been monitoring and trapping the insect.
The ECDC has warned international travel will further increase the risk of more European outbreaks.
It has advised people to remove stagnant water from gardens or balconies, where mosquitoes can breed, and use repellent as well as screens on windows and doors.
