West Nile fever
2018 West Nile fever season: cases so far exceed the total number in previous five years
Compared to previous years, West Nile fever case numbers have increased threefold. For comparison, within only one week, in the end of August, 300 human cases were notified in the EU – this is more than the total number of annual cases reported in 2017 (207 cases) or 2016 (225), and similar to the numbers for the last major season, in 2010 (393).
It is likely that the virus will spread to more areas in the coming months, including areas where no human locally acquired cases have been reported previously, states ECDC risk assessment.
ECDC monitors the West Nile fever cases in Europe and issues weekly updates, each Friday, during the transmission season.
Last updated: 12 October 2018
Rapid risk assessment
Rapid risk assessment: Early large increase in West Nile virus infections reported in the EU/EEA and EU neighbouring countries, 13 August 2018Read the risk assessment
Latest epidemiological update
West Nile fever in Europe: Number of infections so far exceeds the total number in the previous five yearsRead the update
Epidemiological update: West Nile fever in Europe - Number of infections so far exceeds the total number in the previous five years
ECDC Regional meeting on West Nile fever real time surveillance and exchange of good practices on vector-borne diseases
Joint Meeting of the EFSA Animal Health and Welfare Network and the ECDC Emerging and Vector-borne Disease Network on West Nile fever virus surveillance in the European Union
Prevention and control
The best protection against mosquito-borne diseases is preventing mosquito bites. Control measures include strengthening mosquito surveillance in areas in Europe at risk of importation of mosquitoes and virus transmission.