Date Key facts
Following the seasonal peak from August to early September, WNV activity declined across Europe. In 2026, Europe experienced the most widespread geographical distribution of WNV to date, with numbers of human cases and animal outbreaks exceeding levels reported in previous years. Overall, there is…
The 2026 WNV season has affected a broader geographical area than any previous season, with numbers of human cases and animal outbreaks exceeding levels reported in previous years. Overall, there is no indication of increased disease severity in humans in Europe. Italy remains the most affected…
The 2026 WNV season is currently seeing an intense level of circulation in both humans and animals in several European countries. There is currently no indication of increased disease severity in humans in Europe. Italy remains the most affected country in 2026, reporting the most human cases and…
The first human cases of West Nile Virus (WNV) infections this year were reported with date of symptom onset in mid-May, which is similar to previous years. Countries reporting human cases of WNV infection this year also had cases in previous years. The geographical expansion of WNV observed in…
As of 24 June, two countries in Europe reported three locally acquired human cases of WNV infection: Italy reported two cases and North Macedonia one case. Dates of onset ranged from 12 to 27 May 2026. No deaths have been reported. Although no cases had been reported by this time in 2025, some cases…