​​Since 5 June, ECDC has published on its website weekly updates on spatial distribution of West Nile fever cases in the European Union and neighbouring countries. Cases reported in the EU were autochthonous human WN fever cases (neuro-invasive and non neuro-invasive), meeting laboratory criteria as per EU case definition (Directive 2008/426/EC) and all reported cases outside the EU.

​Since the 5 June 2015, ECDC has published on its website an interactive atlas presenting weekly updates on spatial distribution of West Nile fever human cases in the European Union and neighbouring countries.

In 2016, 225 human cases of West Nile fever have been reported in the EU: most cases were reported in Romania and Italy, Hungary and Romania reported a significant increase in number of cases compared to the previous season. Cyprus detected its ever first human case of West Nile fever.

As of 7 September 2018, the number of outbreak-confirmed cases reported in 22 EU/EEA countries since 1 June 2016 is 4 475.

Since the last epidemiological update on 31 August 2018, European countries have reported 530 new West Nile virus (WNV) cases and 52 deaths. The number of WNV infections reported so far exceeds the total number of infections in the previous five years.