West Nile virus has spread to 12 European countries, prompting European experts to demand stricter mosquito control measures, according to reports by Romanian news television Digi 24 and the Bulgarian News Agency (BTA).
Geographic Spread and Regional Impact Across Europe
Data from the European Centre for Disease Prevention and Control indicates that transmission now spans 99 distinct regions across Albania, Austria, France, Germany, Greece, Italy, Kosovo, the Netherlands, North Macedonia, Romania, Serbia, and Spain. Digi 24 notes that 21 of these regions are reporting West Nile virus for the very first time. This marks a notable expansion compared to 2025, when authorities detected the disease in 67 regions across nine countries.
In Romania, the National Center for Surveillance and Control of Communicable Diseases reports that infections concentrate heavily in the capital city of Bucharest alongside Călărași and Giurgiu counties.
Health Risks and Transmission Dynamics of West Nile Virus
West Nile virus is a vector-borne viral disease affecting both humans and animals, transmitted primarily through the bites of infected mosquitoes that act as viral carriers. According to health authorities cited by Digi 24, the majority of infected individuals experience mild or moderate symptoms such as fever, headaches, muscle aches, and occasional skin rashes.
In rare instances, the virus advances to severe neurological complications, including meningitis or encephalitis, which can pose life-threatening risks. Because clinical presentation often mimics routine seasonal illnesses, public health experts emphasize laboratory testing as the sole definitive method for confirming an infection.
Did you know?
West Nile virus cannot be spread from person to person through casual contact; transmission relies entirely on mosquito vectors.
Frequently Asked Questions
How is West Nile virus transmitted to humans?
The virus transmits primarily through the bite of an infected mosquito carrying the pathogen.

What are the most common symptoms of the infection?
Most infected individuals experience mild symptoms such as fever, headaches, muscle aches, and sometimes a rash.
Which European countries are most affected by the current outbreak?
Italy and Greece report the highest case counts with 311 and 157 cases respectively, followed by Romania with 34 cases.
Can West Nile virus cause severe illness?
Yes, in rare cases, the infection leads to severe neurological complications like meningitis or encephalitis, which can be life-threatening.
