The World Health Organization Regional Office for Europe is urging countries to strengthen mosquito surveillance and public knowledge of protective measures as West Nile virus cases climb in parts of the continent, with the transmission season just getting under way. For most people the risk remains low, but anyone living in or travelling to an affected area should take basic steps to avoid mosquito bites and know the signs of severe illness in case they or someone close to them falls ill.

Italy, Spain, Romania and North Macedonia also reported locally acquired cases of West Nile virus infection.

The warning to strengthen mosquito surveillance comes as locally transmitted cases are reported in Greece, Italy, Spain, Romania, and North Macedonia.