Italian health authorities have reported that West Nile virus is spreading across a broader area of the country and for more months of the year, with warming temperatures blamed for expanding mosquito activity. Officials say longer warm seasons are creating conditions that allow disease-carrying mosquitoes to thrive in regions and periods previously too cool for them. The trend highlights a growing public health concern across Europe, where climate change is increasingly enabling the spread of vector-borne illnesses once considered rare or geographically limited.