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West Nile virus
Featured in 25 tracked stories · first seen
Situations
West Nile virus cases surge across Europe and the US
91 clusters · 865 sources · last updated
Latest: West Nile virus cases and deaths rise in Romania and Greece
The West Nile virus outbreak continues to expand across Europe and North America. In Greece, health experts warn that current domestic case counts may only represent the “tip of an iceberg,” as approximately 80% of infec
West Nile virus surge in North America, Europe, and Balkans
18 clusters · 270 sources · last updated
Latest: Croatia reports 15 West Nile virus infections
Public health agencies in North America, Europe, and the Balkans continue to report West Nile virus activity. In the United States, activity has expanded into the Southeast and Northeast. In Florida, Duval County reporte
West Nile virus surge expands across Europe
5 clusters · 111 sources · last updated
Latest: West Nile virus activity reported in Serbia while Republika Srpska remains unaffected
By mid-September 2026, the West Nile virus outbreak has expanded across Europe, with over 1,000 locally acquired infections reported across 15 nations. Significant clusters have been identified in Italy, Greece, Spain, a
West Nile virus spreads in Europe and North America
16 clusters · 56 sources · last updated
Latest: Colorado reports two equine West Nile virus cases
In the United States, West Nile virus (WNV) continues to impact equine populations and is increasingly detected in mosquito populations. In Florida, an under-vaccinated 16-year-old Quarter Horse in Indian River County wa